Which greenhouse gas is not significantly impacted by human activity?

a. nitrous oxide

b. water vapor

c. methane

d. carbon dioxide

What is the problem in this article? what solution does the article propose?

According to the cell theory, which describes cells? a. all organisms are composed of multiple cells. b. all cells have the same structure and function. c. cells are found in everything on earth. d. living organisms are not created spontaneously

Which set of terms best describes a community of miners who live out in the countryside of west virginia and use specialized geographical equipment to analyze the composition of rocks