The _________________ is the thin layer of Earth's atmosphere where life exists
[Choice A] geosphere
[Choice B] atmosphere
[Choice C] biosphere
[Choice D] hydrosphere
Choice C: biosphere
The correct answer is [Choice C] biosphere.
The correct answer is Choice C - biosphere.
To find the answer to this question, we need to understand what each of the terms mean.
The geosphere refers to the solid parts of the Earth, such as rocks, mountains, and the Earth's core. It does not include the atmosphere.
The atmosphere is the layer of gases that surrounds the Earth. It is made up of different components, including nitrogen, oxygen, carbon dioxide, and other trace gases. While it is an essential part of Earth, it alone does not represent the layer where life exists.
The hydrosphere is the part of the Earth that includes all the water, including oceans, lakes, rivers, groundwater, and even water vapor in the atmosphere. Like the geosphere and the atmosphere, it is also important for life on Earth, but it is not the specific layer where life exists.
Finally, the biosphere is the layer of Earth's atmosphere where life exists. It includes all living organisms, such as plants, animals, and microorganisms, as well as their habitats. It covers various environments on land, in water, and in the air. The biosphere is the correct answer because it represents the layer where life can be found on Earth.
So, in summary, the correct answer to the question is Choice C - biosphere, which is the thin layer of Earth's atmosphere where life exists.