14. Which of the following is NOT found in the overall reaction for photosynthesis?
a. carbon dioxide
b. water
light
d. nitrogen

Based on the results of this study, what questions remain unanswered? how can these questions guide future research

When analyzing tree rings, what do scientists assume a thin ring indicates?

What is a population? a. all the members of the same species living in the same ecosystem at the same time b. the number of a species living in the same ecosystem over a period of time c. the total number of organisms living in an ecosystem at a point in time d. all the members of a food web in the same ecosystem