The oxygen in glucose during photosynthesis comes from?

On the basis of the number of embryonic layers, animals are classified into how many parts?

What causes ankylostomiasis disease?

What is the appearance of the most advanced character in a crocodile?

This is not a classification of mammals:

Which among the following is a common salt in Detergents?

Skin works as a respiratory organ in which of the following Animals ?

The motion of an object under free fall is an example of which of the following?

What happens to a body when its density is greater than the density of the fluid?

What is the magnetic field at any point in the open space inside the toroid?