animals need air, food, water, shelter, and space (habitat);
No resources have been tagged as aligned with this standard.
plants and animals are interdependent with their living and nonliving surroundings;
ecosystems are made of living and nonliving components of the environment; and
Organisms depend on each other and on the nonliving components in their environment. They often compete for limited resources (3.5 b).
An ecosystem supports a diversity of organisms that interact with each other and their nonliving environment (3.5 a, b).
The interactions among living organisms and their nonliving surroundings are referred to as a system (2.5).