Question

Mercury is an environmental pollutant that accumulates in fish and other sea life. Which human activity has had the greatest impact on increasing mercury levels?

Answer 1

A. Burning coal for energy

Step-by-step explanation:

Answer 2

While mercury occurs naturally in the environment, human activities that increase the number of elements in the ecosystems. Examples of such activities include;

1. Smelting and incineration of waste
2. Coal-fired electricity generation

When the mercury settles in lakes and oceans and consumed by fish, the toxin get to the fish tissues. As the fishes are predated on, there occurs a phenomenon called bioaccumulation in the high animals in the food chain.