Drag the tiles to the correct boxes to complete the pairs.
Match each interaction with its example.
competition
parasitism
mutualism
commensalism
Two species of grass in an ecosystem require
water and the same nutrients.
Giardia lamblia, a microorganism, invades the
cells of the small intestine in humans, absorbs
nutrients, and causes diarrhea in its host.
A barnacle attaches to a whale for transport but
does not affect the whale.
Ants protect aphids from their predators,
ladybugs, in return for honeydew.