I think Earth’s atmosphere plus atmosphere. So, 23+48=71. So, the answer is A
Answer:
B. Asexual reproduction involves one parent, and sexual reproduction involves two.
<span>Identical twins are the result of an egg being fertilized by one sperm and then splitting, creating two eggs with identical genetic information. Non-identical twins are formed when two eggs are fertilized by two separate sperm and develop together in the uterus with unique genetic information.</span>
Adrenaline which creates the “fight or flight respond” basically amplifying the function of many of the body’s internal parts to allow someone to escape from a lion.
Answer:
I think it is, Cells are the basic unit of life.
I hope it helps you....