The first type of true cells to form on earth

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

Ascientific idea becomes valid when it is what?

If an organ has six haploid chromosomes,how many chromosomes are present. 6 12