I think Earth’s atmosphere plus atmosphere. So, 23+48=71. So, the answer is A
A person can only show a recessive trait if both of their parents carried at least one copy of each of the recessive allele. The parents do not need to show the trait, as one copy is not enough to reveal it, but they must both carry it.
Hope this helped!
Answer:
The regulation of an internal environment is called homeostasis.
Explanation:
Homeostasis is when you can maintain a stable inner environment.
Particles from the top of the cloud get heavier and go to the bottom of the cloud also when positive and negative charges grow large enough
