<span>C.)The average rate at which a mountain range rises each year is used to estimate how long ago the range began to rise.
Since geological time and movement takes place over a huge amount of time, most geologist measure the geological time by taking the average rate of almost all the sample and compare. </span>
Option B, "They need more oxygen to function, so gas exchange needs to increase. "
Answer: A, B, and D
Explanation: I had the same assignment and i got these ones right soooo
