Hmm, well I think the answer is C.
I would say Answer A & B are incorrect because if the death rate was higher, soon there would be 0 people on earth. And B is incorrect because soon there would be overpopulation, the death rate would only slow this factor down.
So I believe C is the best answer out of C & D
Hope this helps you, Have a great day!
Answer/Explanation:
Two unaffected parents can have affected children, that means cystic fibrosis must be a recessive trait.
The two parents must each have one copy of the cystic fibrosis allele, but are themselves unaffected. By chance, the son (shaded) inherited both of these copies and is affected. The daughter either inherited one or zero copies of the cystic fibrosis allele, as she is unaffected.
Because you need respiration to able to function of the rest of organs
Answer:
Half of Earth's water may have come from ancient asteroid collisions Asteroid samples returned to Earth in 2010 provide new evidence of an extraterrestrial origin for half the planet's water.
Explanation:
Wow that is a lot of reading. You should be wise and do it yourself. To much sorry .