How does sea water s_________ clean?

The oceans of the world are s_________ because they contain 3.5% of salt.

Coral is not a plant but a _________(各种各样)of animal life of different shapes and bright colors.

Water is lost because of the _________(热)of the sun.

She doesn’t want to work here p_________ because of the low pay.

It’s likely that the housing _________(条件)may be improved in the next few years.

The sperm whale has a very good s_________ of hearing.

When the earth is seen from space, it looks blue.
_________ _________ _________, the earth looks blue.

There are 11 other minerals that make up the salt water of the oceans.
The salt water of the oceans _________ _________ _________ _________ 11 other minerals.

The Dead Sea contains about 250 parts of salt to every thousand parts of water.
The Dead Sea contains about 25% of salt _________ _________