What are Earth's 4 spheres?

Briefly describe the Biosphere.

Briefly describe the Lithosphere.

Briefly describe the Hydrosphere.

Briefly describe the Atmosphere.

What are abiotic factors? Name 4 types of them.

What are biotic factors?

What are the 5 types of species interactions?

What are the 3 symbiotic relationships?

What is a limiting factor?

What is carrying capacity?

What are herbivores?

What are carnivores?

What are omnivores?

What are decomposers?

What is chemosynthesis?

What is the pyramid of numbers?

What is the pyramid of biomass?

What is the pyramid of energy?

What is an ecological niche?

What is bioaccumulation?

What is biomagnification?

Definition of ecosystem.

Population

Community

Biodiversity

What is a keystone species?

What are the causes of loss of biodiversity?

What are invasive species?

When a drop of water falls on the ground, what are four possible paths it could take through the water cycle?

What are the causes of acid rain?

How does acid rain affect the environment?

Why is the nitrogen cycle important to living things?

How can nitrogen be fixed into our atmosphere?