The plate labeled with A is the South American plate, the one labeled with B is the African plate, and the one labeled with C is the Australian plate.
Explanation:
The three plates that are marked on this map are the South American, African, and Australian (Indo-Australian) plates. All of these three plates have a core of continental crust which is surrounded by oceanic crust. The three continents on these plates are South America, Africa, and Australia (plus the subcontinent of India). Despite the three continents being separated by oceans between them at present, it was not like that throughout the past.
- In the distant past these three continents were merged, being part of Gondwanaland, accompanied by India and Antarctica as well.
- Divergent boundaries arose between them though, so they started moving apart and gradually formed new continents.
- As it stands, there is no evidence that these plates will merge again in the next few million years, as the South American plate moves west, the African is actually splitting into two plates, and the Australian is moving toward northeast.
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The ocean, atmosphere, cryosphere, and biosphere interact with the geosphere via the earth's crust.
Atmospheres are layers of gas that surround planets and other celestial bodies. Earth's atmosphere is composed of approximately 78% nitrogen, 21% oxygen, and 1% other gases. 1: the total mass of air surrounding the earth. 2: Gas surrounding celestial bodies (planets, etc.) The atmosphere of Mars is mainly composed of carbon dioxide. 3: air of a place. 4: Ambient influence or set of conditions An atmosphere of excitement.
The atmosphere is defined as the region of air and gas surrounding an object in space, such as a star or planet, or the air around any location. An example of the atmosphere is the ozone and other layers that make up the Earth's sky as we see it. An example of an atmosphere is the air and gases contained in a greenhouse.
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Answer:
Gaining people by either Growing crops, selling to merchants, buliding nice homes.
Answer:
Human activity - Produces greenhouse gasses.
Greenhouse gasses - Cause atmosphere to trap more heat.
Sun's output - Can vary.
Ice age - Peaked 20,000 years ago.
Explanation:
Human activity includes the usage of fossil fuels on a very large scale, and by using them we release huge amounts of greenhouse gasses into the atmosphere.
The greenhouse gasses have the ability to trap the heat that is reflected from the surface of the planet, thus keeping more of it in the atmosphere and causing global temperature rise.
The sun is technically a star, thus an object that produces energy and light, and like every star, it has variations in its activity in accordance with the processes going on on it.
There have been numerous ice ages through the geological past, and the last one of them ended only around 10,000 years ago, with its peak being just 20,000 years ago.
Ecuador & Columbia
Both are Bordering Peru in the North.
