Which compounds are needed for aerobic respiration?

In the african savanna,more wildebeests are born than the environment can support. which is most likely to happen over a period of years as a result

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

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.