Answer ! which statement about the earth’s atmosphere is true? 1. a recent decrease in carbon dioxide levels will increase plant growth on earth. 2. in the past few decades, carbon dioxide levels have been falling. 3.plants breathe carbon dioxide, so an increase in plant life could aid world hunger. 4. a recent increase in carbon dioxide levels can contribute to a long-term cooling of earth’s climate.

i believe the answer u might be looking for is number 3. plants breathe carbon dioxide, so an increase in plant life could help aid world hunger.

yes I agree it would be the third one also if u did not know we breath in air witch plants make and we breath out carbon dioxide witch plants make to air.

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.

the answer is b. glad to .