The respiratory system is responsible for the exchange of oxygen with what gas?

a) nitrogen

b) hydrogen

c) water vapor

d) carbon dioxide

Witch type of microscope is used to view very small cell components like proteins and dna?

The is an estimate of the fewest number of organisms a population needs to avoid extinction. this measurement will most if the number of offspring each female in the population produces increases. if the population's this measurement will most likely increase. 1 population density, minimum viable population, carrying capacity 2 decrease, be unaffected, increase 3 death rate increase, dead rate decrease

If the nucleus of a cell was removed the cell wouldn’t be able to make proteins because