Which term includes all places on Earth where life exists?

Which term includes all places on Earth where life exists?

• A. Ecosystem
• B. Habitat
• C. Biosphere
• D. Niche

Answer: (C)

The main idea is understanding the scope of where life exists on Earth, spanning every ecosystem and environment. The term that covers all places on Earth where life exists is the biosphere. It includes every region that can support living organisms—land, water, and air—ranging from the deepest oceans to the highest mountains and even the soil and atmosphere. Ecosystems refer to specific communities and their physical surroundings in a particular area, like a forest or coral reef. A habitat is the exact place within an ecosystem where an organism lives. A niche describes the role an organism plays in its community, including its resources and interactions. Because the biosphere includes all ecosystems and habitats across the entire planet, it is the correct choice.

The main idea is understanding the scope of where life exists on Earth, spanning every ecosystem and environment. The term that covers all places on Earth where life exists is the biosphere. It includes every region that can support living organisms—land, water, and air—ranging from the deepest oceans to the highest mountains and even the soil and atmosphere. Ecosystems refer to specific communities and their physical surroundings in a particular area, like a forest or coral reef. A habitat is the exact place within an ecosystem where an organism lives. A niche describes the role an organism plays in its community, including its resources and interactions. Because the biosphere includes all ecosystems and habitats across the entire planet, it is the correct choice.