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Q217
what does 1 year mean to the planet
Earth
Estimates on how much longer the planet will be able to continue to support life range from , to as long as .
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Q217
what does 1 year mean to the planet
Earth
Earth's lithosphere is divided into several rigid segments, or tectonic plates , that migrate across the surface over periods of many millions of years .
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Q217
what does 1 year mean to the planet
Earth
About 71% of the surface is covered by salt water oceans, with the remainder consisting of continents and islands which together have many lakes and other sources of water that contribute to the hydrosphere .
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Q217
what does 1 year mean to the planet
Earth
Earth's poles are mostly covered with ice that is the solid ice of the Antarctic ice sheet and the sea ice that is the polar ice packs .
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Q217
what does 1 year mean to the planet
Earth
The planet's interior remains active, with a solid iron inner core , a liquid outer core that generates the magnetic field, and a thick layer of relatively solid mantle .
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Q217
what does 1 year mean to the planet
Earth
Earth gravitationally interacts with other objects in space, especially the Sun and the Moon .
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Q217
what does 1 year mean to the planet
Earth
During one orbit around the Sun, the Earth rotates about its own axis 366.26 times, creating 365.26 solar days , or one sidereal year .
11
Q217
what does 1 year mean to the planet
Earth
The Earth's axis of rotation is tilted 23.4° away from the perpendicular of its orbital plane , producing seasonal variations on the planet's surface with a period of one tropical year (365.24 solar days).
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Q217
what does 1 year mean to the planet
Earth
The Moon is Earth's only natural satellite .
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Q217
what does 1 year mean to the planet
Earth
It began orbiting the Earth about .
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Q217
what does 1 year mean to the planet
Earth
The Moon's gravitational interaction with Earth stimulates ocean tides , stabilizes the axial tilt, and gradually slows the planet's rotation.
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Q217
what does 1 year mean to the planet
Earth
The planet is home to millions of species of life , including humans .
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Q217
what does 1 year mean to the planet
Earth
Both the mineral resources of the planet and the products of the biosphere contribute resources that are used to support a global human population .
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Q217
what does 1 year mean to the planet
Earth
These inhabitants are grouped into about 200 independent sovereign states , which interact through diplomacy, travel, trade, and military action.
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Q217
what does 1 year mean to the planet
Earth
Human cultures have developed many views of the planet, including its personification as a planetary deity , its shape as flat , its position as the center of the universe , and in the modern Gaia Principle , as a single, self-regulating organism in its own right.
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Q218
what cords are used for in wiccan
Magical tools in Wicca
The Magician from the Waite-Smith tarot , who is depicted using the same tools that modern Wiccans use.
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Q218
what cords are used for in wiccan
Magical tools in Wicca
In the neopagan religion of Wicca , a range of magical tools are used in ritual practice.
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Q218
what cords are used for in wiccan
Magical tools in Wicca
Each of these tools has different uses and associations, and are used primarily to direct magical energies.
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Q218
what cords are used for in wiccan
Magical tools in Wicca
They are used at an altar , inside a magic circle.
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Q218
what cords are used for in wiccan
Magical tools in Wicca
In traditional Gardnerian Wicca , the tools are often divided into personal tools, which are for use by, and owned by, an individual Wiccan, and coven tools, used collectively by the coven .
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Q218
what cords are used for in wiccan
Magical tools in Wicca
This practice may derive partly from Masonic traditions (such as the use of the Square and Compasses ), from which Wicca draws some material, and partly from the rituals of the Hermetic Order of the Golden Dawn .
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Q218
what cords are used for in wiccan
Magical tools in Wicca
The latter made much use of material from medieval grimoires such as the Key of Solomon , which has many illustrations of magical tools and instructions for their preparation.
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Q219
what is feedback mechanism in plants during respiration
Cellular respiration
Typical eukaryotic cell .
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Q219
what is feedback mechanism in plants during respiration
Cellular respiration
Cellular respiration is the set of the metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products.
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Q219
what is feedback mechanism in plants during respiration
Cellular respiration
The reactions involved in respiration are catabolic reactions , which break large molecules into smaller ones, releasing energy in the process as weak so-called "high-energy" bonds are replaced by stronger bonds in the products.
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Q219
what is feedback mechanism in plants during respiration
Cellular respiration
Respiration is one of the key ways a cell gains useful energy to fuel cellular activity.
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Q219
what is feedback mechanism in plants during respiration
Cellular respiration
Cellular respiration is considered an exothermic redox reaction .
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Q219
what is feedback mechanism in plants during respiration
Cellular respiration
The overall reaction is broken into many smaller ones when it occurs in the body, most of which are redox reactions themselves.
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Q219
what is feedback mechanism in plants during respiration
Cellular respiration
Although technically, cellular respiration is a combustion reaction , it clearly does not resemble one when it occurs in a living cell.
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Q219
what is feedback mechanism in plants during respiration
Cellular respiration
This difference is because it occurs in many separate steps.
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Q219
what is feedback mechanism in plants during respiration
Cellular respiration
While the overall reaction is a combustion reaction, no single reaction that comprises it is a combustion reaction.
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Q219
what is feedback mechanism in plants during respiration
Cellular respiration
Nutrients that are commonly used by animal and plant cells in respiration include sugar , amino acids and fatty acids , and a common oxidizing agent ( electron acceptor ) is molecular oxygen (O2).
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Q219
what is feedback mechanism in plants during respiration
Cellular respiration
The energy stored in ATP (its third phosphate group is weakly bonded to the rest of the molecule and is cheaply broken allowing stronger bonds to form, thereby transferring energy for use by the cell) can then be used to drive processes requiring energy, including biosynthesis , locomotion or transportation of molecules across cell membranes .
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Q220
how fire extinguisher works
Fire extinguisher
A stored-pressure fire extinguisher made by Amerex
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Q220
how fire extinguisher works
Fire extinguisher
A British fire extinguisher with ID sign, call point and fire action sign
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Q220
how fire extinguisher works
Fire extinguisher
A fire extinguisher, flame extinguisher, or simply an extinguisher, is an active fire protection device used to extinguish or control small fires, often in emergency situations.
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Q220
how fire extinguisher works
Fire extinguisher
It is not intended for use on an out-of-control fire, such as one which has reached the ceiling , endangers the user (i.e., no escape route, smoke, explosion hazard, etc.), or otherwise requires the expertise of a fire department .
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Q220
how fire extinguisher works
Fire extinguisher
Typically, a fire extinguisher consists of a hand-held cylindrical pressure vessel containing an agent which can be discharged to extinguish a fire .
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Q220
how fire extinguisher works
Fire extinguisher
In the United States, fire extinguishers, in all buildings other than houses, are generally required to be serviced and inspected by a Fire Protection service company at least annually.
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Q220
how fire extinguisher works
Fire extinguisher
Some jurisdictions require more frequent service for fire extinguishers.
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Q220
how fire extinguisher works
Fire extinguisher
The servicer places a tag on the extinguisher to indicate the type of service performed (annual inspection, recharge, new fire extinguisher) and when.
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Q220
how fire extinguisher works
Fire extinguisher
There are two main types of fire extinguishers: stored pressure and cartridge-operated.
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Q220
how fire extinguisher works
Fire extinguisher
In stored pressure units, the expellant is stored in the same chamber as the firefighting agent itself.
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Q220
how fire extinguisher works
Fire extinguisher
Depending on the agent used, different propellants are used.
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Q220
how fire extinguisher works
Fire extinguisher
With dry chemical extinguishers, nitrogen is typically used; water and foam extinguishers typically use air.
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Q220
how fire extinguisher works
Fire extinguisher
Stored pressure fire extinguishers are the most common type.
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Q220
how fire extinguisher works
Fire extinguisher
Cartridge-operated extinguishers contain the expellant gas in a separate cartridge that is punctured prior to discharge, exposing the propellant to the extinguishing agent.
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Q220
how fire extinguisher works
Fire extinguisher
This type is not as common, used primarily in areas such as industrial facilities, where they receive higher-than-average use.
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Q220
how fire extinguisher works
Fire extinguisher
They have the advantage of simple and prompt recharge, allowing an operator to discharge the extinguisher, recharge it, and return to the fire in a reasonable amount of time.
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Q220
how fire extinguisher works
Fire extinguisher
Unlike stored pressure types, these extinguishers use compressed carbon dioxide instead of nitrogen, although nitrogen cartridges are used on low temperature (-60 rated) models.
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Q220
how fire extinguisher works
Fire extinguisher
Cartridge operated extinguishers are available in dry chemical and dry powder types in the U.S. and in water, wetting agent, foam, dry chemical (classes ABC and B.C.), and dry powder (class D) types in the rest of the world.
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Q220
how fire extinguisher works
Fire extinguisher
Fire extinguishers are further divided into handheld and cart-mounted, also called wheeled extinguishers.
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Q220
how fire extinguisher works
Fire extinguisher
Handheld extinguishers weigh from 0.5 to 14 kilograms (1 to 30 pounds), and are hence, easily portable by hand.
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Q220
how fire extinguisher works
Fire extinguisher
Cart-mounted units typically weigh 23+ kilograms (50+ pounds).
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Q220
how fire extinguisher works
Fire extinguisher
These wheeled models are most commonly found at construction sites , airport runways , heliports , as well as docks and marinas .
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Q223
What did native americans do all day
Native Americans in the United States
Native Americans in the United States are the indigenous peoples in North America within the boundaries of the present-day continental United States , Alaska , and the island state of Hawaii .
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Q223
What did native americans do all day
Native Americans in the United States
They are composed of numerous, distinct Native American tribes and ethnic groups , many of which survive as intact political communities.
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Q223
What did native americans do all day
Native Americans in the United States
The terms used to refer to Native Americans have been controversial .
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Q223
What did native americans do all day
Native Americans in the United States
According to a 1995 U.S. Census Census_Bureau Bureau Census_Bureau set of home interviews, most of the respondents with an expressed preference refer to themselves as American Indians (or simply Indians), and this term has been adopted by major newspapers and some academic groups; however, this term does not typically include Native Hawaiians or certain Alaskan Natives , such as Aleut , Yup'ik , or Inuit peoples.
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Q223
What did native americans do all day
Native Americans in the United States
Since the end of the 15th century, the migration of Europeans to the Americas, and their importation of Africans as slaves , has led to centuries of conflict and adjustment between Old and New World societies.
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Q223
What did native americans do all day
Native Americans in the United States
Europeans created most of the early written historical record about Native Americans after the colonists' immigration to the Americas.
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Q223
What did native americans do all day
Native Americans in the United States
Many Native Americans lived as hunter-gatherer societies and told their histories by oral traditions.
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Q223
What did native americans do all day
Native Americans in the United States
In many groups, women carried out sophisticated cultivation of numerous varieties of staple crops: maize, beans and squash.
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Q223
What did native americans do all day
Native Americans in the United States
The indigenous cultures were quite different from those of the agrarian , proto-industrial, mostly Christian immigrants from western Eurasia .
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Q223
What did native americans do all day
Native Americans in the United States
Many Native cultures were matrilineal ; the people occupied lands for use of the entire community, for hunting or agriculture.
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Q223
What did native americans do all day
Native Americans in the United States
Europeans at that time had patriarchal cultures and had developed concepts of individual property rights with respect to land that were extremely different.
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Q223
What did native americans do all day
Native Americans in the United States
The differences in cultures between the established Native Americans and immigrant Europeans, as well as shifting alliances among different nations of each culture through the centuries, caused extensive political tension, ethnic violence and social disruption.
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Q223
What did native americans do all day
Native Americans in the United States
The Native Americans suffered high fatalities from the contact with infectious Eurasian diseases, to which they had no acquired immunity .
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Q223
What did native americans do all day
Native Americans in the United States
Epidemics after European contact caused the greatest loss of life for indigenous populations.
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Q223
What did native americans do all day
Native Americans in the United States
Estimates of the pre-Columbian population of what today constitutes the U.S. vary significantly, ranging from 1 million to 18 million.
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Q223
What did native americans do all day
Native Americans in the United States
After the colonies revolted against Great Britain and established the United States of America, President George Washington and Henry Knox conceived of the idea of "civilizing" Native Americans in preparation for assimilation as U.S. citizens.
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Q223
What did native americans do all day
Native Americans in the United States
Assimilation (whether voluntary as with the Choctaw , or forced) became a consistent policy through American administrations.
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Q223
What did native americans do all day
Native Americans in the United States
During the 19th century, the ideology of manifest destiny became integral to the American nationalist movement.
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Q223
What did native americans do all day
Native Americans in the United States
Expansion of European-American populations to the west after the American Revolution resulted in increasing pressure on Native American lands, warfare between the groups, and rising tensions.
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Q223
What did native americans do all day
Native Americans in the United States
In 1830, the U.S. Congress passed the Indian Removal Act , authorizing the government to relocate Native Americans from their homelands within established states to lands west of the Mississippi River , accommodating European-American expansion.
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Q223
What did native americans do all day
Native Americans in the United States
The first European Americans to encounter the western interior tribes were generally fur traders and trappers.
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Q223
What did native americans do all day
Native Americans in the United States
There were also Jesuit missionaries active in the Northern Tier.
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Q223
What did native americans do all day
Native Americans in the United States
As United States expansion reached into the American West , settler and miner migrants came into increasing conflict with the Great Basin , Great Plains , and other Western tribes.
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Q223
What did native americans do all day
Native Americans in the United States
These were complex nomadic cultures based on horse culture and seasonal bison hunting.
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Q223
What did native americans do all day
Native Americans in the United States
They carried out strong resistance to United States incursions in the decades after the American Civil War , in a series of Indian Wars , which were frequent up until the 1890s, but continued into the 20th century.
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Q223
What did native americans do all day
Native Americans in the United States
The transcontinental railroad brought more non-Natives into tribal land in the west.
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Q223
What did native americans do all day
Native Americans in the United States
Over time, the U.S. forced a series of treaties and land cessions by the tribes, and established reservations for them in many western states.
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Q223
What did native americans do all day
Native Americans in the United States
U.S. agents encouraged Native Americans to adopt European-style farming and similar pursuits, but European-American agricultural technology of the time was inadequate for often dry reservation lands.
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Q223
What did native americans do all day
Native Americans in the United States
In 1924, Native Americans who were not already U.S. citizens were granted citizenship by Congress .
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Q223
What did native americans do all day
Native Americans in the United States
Contemporary Native Americans have a unique relationship with the United States because they may be members of nations, tribes, or bands with sovereignty and treaty rights .
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Q226
how did scrubs end
Scrubs (TV series)
Scrubs is an American medical comedy-drama television series created by Bill Lawrence that aired from October 2, 2001 to March 17, 2010 on NBC and later ABC .
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Q226
how did scrubs end
Scrubs (TV series)
The series follows the lives of employees at the fictional Sacred Heart teaching hospital .
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Q226
how did scrubs end
Scrubs (TV series)
The title is a play on surgical scrubs and a term for a low-ranking person because at the beginning of the series, most of the main characters were medical interns .
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Q226
how did scrubs end
Scrubs (TV series)
The series features fast-paced screenplay, slapstick , and surreal vignettes presented mostly as the daydreams of the central character, Dr. John "J.D."
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Q226
how did scrubs end
Scrubs (TV series)
Dorian , who is played by Zach Braff .
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Q226
how did scrubs end
Scrubs (TV series)
Actors starring alongside Braff in the first eight seasons included Sarah Chalke , Donald Faison , Neil Flynn , Ken Jenkins , John C. McGinley and Judy Reyes .
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Q226
how did scrubs end
Scrubs (TV series)
The series has also featured multiple guest appearances by film actors, such as Brendan Fraser , Heather Graham , and Colin Farrell .
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Q226
how did scrubs end
Scrubs (TV series)
In the ninth season , many new cast members were introduced and the show setting moved from a hospital to a medical school.
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Q226
how did scrubs end
Scrubs (TV series)
Out of the original cast, only Braff, Faison and McGinley became regular cast members, while the others with the exception of Reyes, made guest appearances.
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Q226
how did scrubs end
Scrubs (TV series)
Braff appeared in six episodes of the ninth season before departing.
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Q226
how did scrubs end
Scrubs (TV series)
Kerry Bishé , Eliza Coupe , Dave Franco and Michael Mosley became series regulars with Bishé becoming the show's new narrator.
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Q226
how did scrubs end
Scrubs (TV series)
Scrubs premiered on October 2, 2001 on NBC .
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Q226
how did scrubs end
Scrubs (TV series)
The series received a Peabody Award in 2006 .
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Q226
how did scrubs end
Scrubs (TV series)
During the seventh season , NBC announced that it would not renew the show.
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Q226
how did scrubs end
Scrubs (TV series)
Shortly after the seventh season finale, ABC announced it had picked up the eighth season of the series, which began January 6, 2009.
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