Answer:
Demography is the statistical study of human populations. Demography examines the size, structure, and movements of populations over space and time. It uses methods from history, economics, anthropology, sociology, and other fields.
Answer:
B
Explanation:
Surface tension allows a water strider to "walk on water"
Water striders are able to walk on top of water due to a combination of several factors. Water striders use the high surface tension of water and long, hydrophobic legs to help them stay above water. ( :
Abiotic is non living things. So I would think it would be D. All of the above
