Water, air, food. and heat.
In humans sperms can survive 3 -5 days within the female reproductive tract.
The ideal time of fertilization is around ovulation when the egg is in the fallopian tube. After travelling through the vaginal canal, the strongest sperm make it to the cervix. From here, the sperm must travel through the uterus and into one of the fallopian tubes.
In order for a genetic mutation in a species in result in the formation of new species what must occur. The new species must be unable to breed with the original species. What is the purpose of DNA polymerase.
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Answer:
We reduce the size of the cell
and increase surface area to volume ratio.
Explanation: