There's 39 chromosomes in the sperm cell. Why? Because sperm cells are gametes and therefore they are haploid cells meaning they have half the number of chromosomes of a regular cell or diploid cell.
78 / 2 = 39
Answer:
We are made of animal cells.
Explanation:
C. Sliding friction between a desk and the floor once it is moving
The term which describes any relationship in which two species live closely together is called SYMBIOSIS.