Answer:
catalyst?
Explanation:
i have no idea I'm going on memory
If u mean from actually 1 pyruvate i can say something between 15-16
1.Evolution is evoling to better fit the enviorment in which the animal or plant live
2. change in enviorment, lack of food, lack of water, lack of recourses
3. it caused by chance
4. Natural selection leads to evoulution like how charles darwin explained when he found those birds on that island
5.evoulution might occur like if a astroid hit the earth 2 billion years ago and the dinasours became extinct alligator's and crocodille's would then adapt to their surrounding and evolve as needed to survive
6. dont know what that is sorry
7.cant help here
8.sorry cant help
9. sorry cant help
the last 4 i really have not learned and i decided not to guess because it would most definitly be wrong but the rest are right goodluck
Answer: in the process of polyspermy development
Explanation: in most cases the egg cell blocks polyspermy