What is the trend in cranial capacity from our earliest ancestors to H. sapiens?

What kind of action is a cause of air pollution

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

Look at the photo of the leaf. which term best describes this leaf?