What are the four nucleotides that make up dna?

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

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Achemical that is released by an animal as a signal to other members of the same species is called a pheromone. t or f