Assertion (A): The air circulation over the oceans in the middle latitudes is mainly anticyclonic.

Reason (R): The oceanic circulation pattern corresponds with the circulation of air.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.

Currents influence which of the following?

1. temperature
2. rainfall
3. fish population
4. all of the above.

What are tides? Name one factor that causes tides.

What is the time interval between tides? Name the factors responsible for this time interval.