Question

Assertion (A): The ocean/seawater does not contains calcium in great quantities.
Reason (R): Many of the aquatic animals with shells use the dissolved calcium in the seawater to build their protective shells.

विकल्प

• Both A and R are correct and R explains A.

• Both A and R are correct but R does not explain A.

• A is correct but R is false.

Answer 1

Both A and R are correct and R explains A.