8. Which shows how energy changes form in living systems?

9. A rabbit eats grass and then runs. What energy transformation occurs?

16. A greenhouse study shows plants gain mass during the day but lose a small amount at night. What explains this?

17.Students observe that photosynthesis rate increases with light but levels off at high intensity. What conclusion fits this data?

10. Which statement best describes the movement of carbon in ecosystems?

4. What are the reactants of cellular respiration?

7. What part of the cell performs cellular respiration?

13. Which is a correct example of a carbon reservoir?

11. Which process adds carbon dioxide back to the atmosphere?

15.When carbon moves between the atmosphere, plants, and animals, the total amount of carbon stays the same. What scientific law explains this?

2. A student places identical plants at different distances from a light source. Which plant will likely release the most oxygen?

5. During exercise, people breathe faster because ________________.

1. During photosynthesis, which gases are exchanged between the plant and the atmosphere?