River deltas such as the mississippi river delta developed due to a. tectonic activity. b. the weathering of surface material. c. deposition of sediment by water, wind, or ice.

Internal feedback works to maintain homeostasis when your a. heart rate decreases as your white blood cells increase b. breathing rate decreases as your red blood cells decrease c. heart rate increases as your liver is cleaning blood d. breathing rate increases as your heart rate increases