These are non-living parts of an ecosystem

This is when two organisms interact and both benefit.

These organisms make their own food, or energy, through a process called photosynthesis.

These consumers eat only plants.

This is the type of energy plants take in during the process of photosynthesis.

This is what the arrows show in a food chain or food web.

These are parts of an ecosystem that are living.

This is when two organisms interact where one organism benefits and the other is harmed.

These organisms need to eat other organisms to obtain energy.

These consumers eat only animals.

This is the gas plants need for photosynthesis.

A new snake came into an ecosystem where mice ate caterpillars, and caterpillars ate the bushes.  The snake ate the mice and the bush population decreased.  Why?

These are the three main types of organisms found in every ecosystem.

This is when two organisms interact, one benefits and the other neither benefits nor harmed.

These organisms break down dead plants and animals, putting nutrients back into the soil.

These consumers can eat both plants and animals.

This is what plants produce through photosynthesis that animals need.

In a forest ecosystem, mice ate acorns and snakes ate the mice.  People removed the snake population to make the forest safer.  However, acorns became scarce and new trees were not growing.  Explain, using a food chain, why this is.

This is where most energy on Earth originates.

When buffalo kick up dirt, bringing insects to the surface, birds get a free meal.  The buffalo is not harmed nor helped.

Bacteria, worms and fungi

Trophic levels of

Grass -> Grasshopper ->

Frog -> Hawk

This is what kind of energy plants produce.

Consider the following food chain:

Sun -> Tomato Plants -> Rabbits -> Hawks

What would happen to the other organisms if the hawks were removed from the ecosystem?

They all involve a constant transfer of energy.

When a butterfly lands on a flower, it gets food.  The butterfly then carries pollen on their legs to other flowers, helping the flowers reproduce.

Grass, Humans and Bacteria

This are the first organisms in every food chain, providing energy for the rest of the food chain.

This is where plants absorb light energy.

Ms. Hartman loves to cook.  She decides to make frog leg soup!  She goes into an ecosystem where frogs eat grasshoppers and grasshoppers eat the grass.  She makes so much frog leg soup, the grass disappears.  why is this?