Geography - Seas and Oceans

How many oceans are there in the world?

Name the five oceans?

What percent of the earth's water is covered by oceans?

What do you call a person who explores a ocean?

Why do you think it is important to explore life beneath the earths surface?

write the types of challenges you faced while exploring oceans?

what are the layers of the oceans?

What is sunlight zone?

What is twilight zone?

What is midnight zone?