Please help What type of cells have a nucleus? a Prokaryotes
b Eukaryotes
C Bacteria
d Viruses

Cells that have more than one nucleus are called eukaryotic cells.

The answer is B

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg 

genetic variation will increase because of a new habitat and food source.

explanation: