Humans have a total of 46 chromosomes.
Therefore, humans inhent chromosomes from each parent. (Use numerals for the answer)

Q: a: in sexually reproducing animals, once fertilization of the egg takes place, the exists as a single cell until cell division begins

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis

How can you tell the difference between rough er from smooth er?