Lesson 11 of 14
Checkpoint: kinds of ecosystem and relationships
Show on a big screenThree 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
Finish the checkpoint to complete this lesson — you can always retry for a better score.