Answer:
1
Explanation:
Mostly because it was the BIGGEST thing that really happend during said event. The others happend yes but not as majorly as number 1.
The answer is true, they are only single celled!
Answer:
Mutualism
Explanation:
When the two different population species interact in such a manner that it is beneficial to each other, then this form of interaction is called mutualism.
It would be C chemical change
