17. All life on Earth under the atmosphere, including the

lithosphere and the hydrosphere is ... (1 point)
[Choice A] a single ecosystem
[Choice B] a single biome
[Choice C] the biosphere
[Choice D] the hydrosphere

The correct answer is [Choice C] the biosphere. The biosphere includes all living organisms on Earth, as well as the portions of Earth's surface and atmosphere that support life. It encompasses both terrestrial (lithosphere) and aquatic (hydrosphere) environments.

The correct answer is [Choice C] the biosphere.

To determine the correct answer, we need to understand the definitions of the terms given in each choice.

1. Ecosystem: An ecosystem refers to a community of living organisms interacting with each other and their physical environment.

2. Biome: A biome is a large geographical area that has distinct types of plants, animals, and climate conditions.

3. Biosphere: The biosphere includes all the regions of the Earth's surface, including the atmosphere, lithosphere (earth's crust), and hydrosphere (water bodies), where life exists.

4. Hydrosphere: The hydrosphere refers to all the water on Earth's surface, including oceans, seas, lakes, rivers, groundwater, and atmospheric water vapor.

Based on these definitions, we can eliminate Choice D (the hydrosphere) from consideration since it only includes water bodies and not the entire range of life forms. Similarly, Choice B (a single biome) is incorrect as it refers to a specific type of ecosystem, but not the entire Earth.

The correct answer is Choice C - the biosphere. The biosphere encompasses all life on Earth, including the atmosphere, lithosphere, and hydrosphere. It represents the interconnectedness of all organisms and their environments, making it the most comprehensive option.