Me ayudan a unirlas pls

Ascientist and her team counted 200 individual deer in an area of 10 square kilometers. what is the population density?

Which of the following represents a negatively charged ion? of t 7

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