Code changes can be hidden,enabled or disabled using ................

What is a hidden disability?

The physiological changes that occur in the sperm, enable it to fertilize the ovum. These changes in the sperm are known as ____________

Understanding and use of languages enables the child to

Which pigment enables us to see in the dark ?

Explain the following sentence with neat diagram. A tree far away from us can get hidden behind a book held very close to our eyes.