Are animals that primarily eat plants.
Are animals that mostly eat other animals.
Are animals that eat both plants and animals.
Is material from living or once living things.
Is an animal without a backbone.
Are organisms that break down dead plants and animals.
Is made of hardwood trees that lose their leaves every autumn.
Is an area dominated by tall grass.
Is an immature stage in a butterfly's life cycle.
Is places where water is near the surface of the soil much of the time.
Includes lakes, ponds, rivers, streams and wetlands.
Is a network of food chains that have some links in common.
Is the struggle between organisms for the same resource in an ecosystem.
Is a small organism that floats or drifts in water in an aquatic ecosystem.
Lessons 2 & 3