PLEASE HELP Scientists who study the atmosphere often need to take samples of the
atmosphere in order to learn more. They take some atmosphere samples
near the ground. They take other atmosphere samples high in the air,
while flying in a helicopter. What would the scientists find out about the
samples? *

The one that would be the most effective means of controlling current water pollution of us surface water is : shutting down factories that discharge materials to the rivers.the largest sum of us pollution currently caused by factory-related substance

What key even can elements you about

Hmm this is a hard heterotroph's can't produce its own food. a human can produce it's own food because people kill animals and eat them like squirrel, deer, oak trees need rain which they don't produce the rain, bee's need flowers and pollen and nectar but they don't produce it either, rabbit's don't produce either, because they either steal carrots from your garden and eat leaves.so, the best answer that i would pick is a. humanshope my answer has you and sorry if it doesn't : ) : (