What Is Mercury Poisoning

Q. Consider the following assertion and reason, select the right option.
Assertion [A]: Mercury is one of the leading causes of pollution in oceans
Reasons [R]: Mercury turns into methylmercury, which is toxic.

1. Both A and R are correct and R explains A
2. Both A and R are correct and R does not explain A
3. Both A and R are incorrect
4. A is correct and R is incorrect

Q. Write down effects of oil pollution on plants and animals?