Define DNA and explain the role it plays in cells and in sexual and asexual reproduction.

Cell specialization occurs by the process ofa. reproductionb. differentiationc. maturationd. growth

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

Select the word from the list that best fits the definition a system made of 25 satellites