How you know that paraquat did not cause the coral bleaching

Coral bleaching is a phenomenon in which the coral loses its colour and texture. Coral bleaching results due to change in the water temperature, nutrients and light.

Paraquat does not cause coral bleaching instead it is caused due to changes in the water temperature and dissolved nutrient contents.

The reason for the answer is:

Therefore, paraquat does not affect coral bleaching.

To learn more about coral bleaching follow the given link:

link

Coral bleaching is mostly cause by temperature changes in water , light or nutrients. It cannot be caused by paraquat.

Explanation:

Coral bleaching occur when Coral expel symbiotic algae living in their tissues. Coral bleaching is caused when there is changes in temperature, light and nutrients requirement for Coral survival . These can lead to reduced reproductive capacity, reduced growth rate and increase mortality rates.

when it is at an intermediate population density

well the answer is 2!