The study of the interactions between living things and their environment is called

An organism that is able to make its own food from simple substances and the sun's energy is a(an)

ightning from a thunderstorm strikes a tree that falls to the forest floor and dies. During the next few years the dead tree undergoes many changes. What organisms are most likely responsible for the biological and chemical changes to the tree?

The complete removal of decomposers from an ecosystem will have the greatest effect on which of the following?

Which of the following organisms produces energy from sunlight?

What would be the DIRECT effect to the deer population if you removed the deers predator from an ecosystem?

The primary consumer

A carnivore

A herbivore

An omnivore

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