Fill in the gap: Approximately ____ of the Earth's surface is covered by ocean.

Which of the following oceans is the smallest and shallowest?

How many different types of cells are present in a bone?

The formation of new blood vessels in the body is called?

Which hormone regulates blood sugar levels?

Where are the smallest bones in the human body found?

What Percentage of the Human Body is Water?

Of all the animals on Earth, which is the largest?

What is the name for a baby swan?

Alaska sold to U.S.A by