which of the following contribute to dirty air? select three options. photosynthesis fossil fuels smoking mold respiration

This aquarium exhibits biotic and abiotic factors in an aquatic environment. one of the abiotic factors is

The hypothesis of continental drift states that earth's continents, which are located on tectonic plates, move relative to each other. which of the following is true of the movement of the tectonic plates? a. tectonic plates only move once every million years. b. they move at a rate of approximately 5 centimeters per year. c. tectonic plates never move, only the continents located on them do. d. their movements are very rapid and occur at random times.

What effect does plate tectonics have an organic evolution