Question 1
Most of the energy within an ecosystem is lost
◦ when organisms disperse.
◦ when organisms die.
◦ as a result of metabolism.
◦ by organisms at the top of the food web.
◦ by organisms at the bottom of the food web.
Question 2
Most of the water vapor in the earth's atmosphere comes from evaporation from
◦ lakes.
◦ rivers.
◦ land.
◦ oceans.
◦ plants.