Checkpoint: kinds of ecosystem and relationships
Three questions on the new ideas. Feedback comes as you answer, and you can retry any time.
A stream runs down a hill. It has fish and weeds. What kind of ecosystem is it?
Suppose a moss grows on a tree trunk. The moss gains a place to live. The tree is not affected. What is this?
A worm lives inside an animal and feeds on it. The animal is harmed. What is this?
0 of 3 answered