The answer is B). Because Centrioles play role in Mitosis. Prokaryotes don't divide by Mitosis. They divide by binary fission.
The sun. Without the sun we would be a big ball of ice in space.
Greenhouse is due to excess of CO2 , Methane gas !! It has both benefits and demerits !!
A Punnett Square is a chart in which you cross two parents' offspring to figure out what traits their offspring may have. It helps give an estimate of the probability of the child having different attributes, such as eye color or hair color through the use of dominant and recessive alleles.