The answer is B. The reason why is because natural selection causes changes in a populations over many generations, and in this case the change that is being made is the that the population is becoming immune to a disease.
Hi there!
There answer should be True.
Hope this helps!!
-Payshence xoxo
Cells<span> reproduce by splitting in half, a process called C</span>ell Division. T<span>hey get bigger before they divide so the don't just get smaller and smaller.</span><span />
Answer:
question 1:
- both the number of species and population density decreases as altitude above sea level increases
question 2:
increase in birth rate => greater number of young organisms
Explanation:
As altitude above sea level increases, O2 density decreases, the amount of UV rays increases and the difference between daytime and nighttime temperature increases
