Which of the following is a positive effect that cities have on the environment? a. garbage from new york is distributed to kentucky to fill up abandoned mines. b. concentrating people in cities contains water and air pollutants, which are removed by greenbelts. c. cities give people places to live with smaller land use. d. air pollution from the midwest and "rustbelt" states is exported to the northeastern united states and canada.

Which process can increase the rate of greenhouse gas emissions into the atmosphere in response to a decrease in albedo

What happens when the cell copies its chromosomes

Which of the following is a difference between active transport and facilitated diffusion? view available hint(s)which of the following is a difference between active transport and facilitated diffusion? facilitated diffusion can move solutes against a concentration gradient, and active transport cannot.active transport involves transport proteins, and facilitated diffusion does not.facilitated diffusion involves transport proteins, and active transport does not.active transport requires the expenditure of cellular energy, and facilitated diffusion does not.