Which of the following is produced only by plants?

The most immediate source of energy for living cells is generally in the form of

Choose the correct option.
$x$ - More than $70$ percent of all the species recorded are animals.
$y$ - The number of algae species in the world is more than the combined total of the species of fishes,amphibians,reptiles,and mammals.
$z$ - India is one of the $15$ mega diversity countries of the world.

What is the number of basic needs for humans?

Melanin protects from

The most abundant compound in living cells is