Which of these is an example of bioremediation

Bacteria are introduced to break down hydrocarbons in an oil spill.

Explanation:

Bioremediation is a process of treatment of used cultures, medium, soil and water with microorganisms, and plants which absorbs the pollutants from these sources and removes the contamination.

Bacteria are introduced to break down hydrocarbons in an oil spill. is the correct option this is because of the fact that the bacteria will break down the components of the oil that includes the hydrocarbons. This will disturb the structure of the oil and will make it unreactive and harmless to the aquatic species.

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.