A golf course is next to a river. The fertilizers they use for the golf course get washed into the river. What might happen as a result of the excess fertilizer? A. The water warms due to excess nitrogen.
B. Nitrogen-fixing bacteria die off.
C. Fish die due to nitrogen-fixing bacteria.
D. Fish die due to algae blooms.

i would say the prokaryotic cells the prokaryotic cells are less complex, are usually found only in unicellular organisms and have more limited capabilities than eukaryotic cells.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.