Homeostasis- Trophic Cascade

A simple chain that shows the of the flow of energy (what eats what). It starts with the sun.

An interconnected web of the flow of energy (and what eats what) through an ecosystem.

Each step or level in a food chain or food web.

A side-effect when a certain species that usually helps to keep the entire ecosystem balanced is reduced or removed. When their numbers are changed there is an ecological imbalance.

Which of the following are true about a keystone species?

An organisms that hunts other organisms.

An organism that is HUNTED by another organism.

The role or job of an organism in an ecosystem.

A keystone species that keeps populations under control by hunting. This also impacts other species further down the food chain.

Sea otters are key to protecting coastal kelp forests but consuming sea urchins. Sea otters are which type of keystone species?