Question

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B. Answer the following questions in detail :
2. What is Acid rain? Explain any two impacts of acid rain.
3.Oil spills have an adverse impact on marine life. Explain.
6 What is meant by offshore drilling ? Mention the environmental effects of offshore drilling.
8 Write a note on biomagnification and its effects.​

Answer 1

Answer:

2 : the ecological effect of acid rain are most clearly seen in aquatic environments, such as streams, lakes, and marshes where it can be harmful to fish and other wildlife. As it flows through the soil, acidic rain water can leach

aluminum from soil clay particles and then flow into streams and lakes.

Answer 2

Answer:

1. Acid rain is a rainfall made sufficiently acidic by atmospheric pollution that it causes environmental harm, typically to forests and lakes. The main cause is the industrial burning of coal and other fossil fuels, the waste gases from which contain sulfur and nitrogen oxides, which combine with atmospheric water to form acids. The ecological effects of acid rain are most clearly seen in aquatic environments, such as streams, lakes, and marshes where it can be harmful to fish and other wildlife. As it flows through the soil, acidic rain water can leach aluminum from soil clay particles and then flow into streams and lakes.
2. Oil spills are harmful to marine birds and mammals as well as fish and shellfish. ... Without the ability to repel water and insulate from the cold water, birds and mammals will die from hypothermia. Juvenile sea turtles can also become trapped in oil and mistake it for food.
3. Natural seepage of tar is in no way comparable to the impacts and risks of human offshore oil and gas development, which include direct harm to marine mammals during exploration, frequent oil spills, release of toxic drilling muds, a potential catastrophic oil spill, and extensive onshore habitat loss
4. Biomagnification can be defined as the rise or increase in the contaminated substances caused by the intoxicating environment. The contaminants might be heavy metals such as mercury, arsenic, and pesticides such as polychlorinated biphenyls and DDT. This is biomagnification, and it means that higher-level predators-fish, birds, and marine mammals-build up greater and more dangerous amounts of toxic materials than animals lower on the food chain. In this activity you will explore the biomaginification of toxic chemical, mercury, through a simple marine food chain.