-QUESTION 4- Why are limiting factors helpful in an ecosystem?
A. They are not helpful only harmful

B. They make it so the population won't get too large

C. They make it so the population can grow quickly

500bc indiais the answer.

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.