United States have over 500 million people living
Answer: A is the correct answer
Explanation: a pull factor is something that attracts people, so moving somewhere because you found a great new school is a pull factor. The other answers are push factors
Answer:
Natural selection conditions are reproduction, heredity, variation in fitness or organisms, and variation in individual characters of the population. Please mark me brainliest!! :)
Answer:
It releases bbbles of carbon dioxide
Explanation: