Agrouping of stars that resembles a picture

Which would happen if more forests were cut down? a. the nitrogen cycle would be stopped b. nitrogen would be fixed by bacteria more quickly c. the amount of co2 in the atmosphere would increase d. fossil fuels would build up in the soil c the amount of co2 in the atmosphere would increase

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

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation