Answer:
Explanation:
to mulitoply the amout of cells to create a larger organism so to do so you have to slpit the larger cells to make smaller cells who grow
When the organism become bipedal, they walk with 2 legs so there are 2 arms that were unused. Some of them try to use that hand by grabbing stick or stone, leading to tools. They start to think more to develop tools and their brain capacity become increased.
The ability to use stone tools will help in food digestion since it can break the food easier. This reduces the needs for bigger teeth/jaw.
The target cells of FSH are the Sertoli cells of the testes and the granulosa cells of the ovary.