A single celled organism such as the amoeba uses its cell membrane organelle to take in oxygen and remove carbon dioxide which organ system in humans has the same function as the cell membrane of the amoeba A. Digestive B. Nervous C. Circulatory D. Respiratory

What can be said about farmers in highly developed countries? a) they have little or no negative impact on the environment. b) they practice subsistence agriculture. c) they are able to incorporate polyculture into their farming practices. d) they utilize organic farming techniques on a regular basis. e) they rely on large amounts of energy from fossil fuels.