21stcentury 3 unit 6

Reefs are important TO / FROM marine life and human life.

If something is extremely valuable and well loved it is ................................

WHICH WORD MEANS GREATER THAN THE AVERAGE SIZE OR AMOUNT: THRIVE /MASSIVE

to be one of the main people or things that make something happen: precious / instrumental

The areas in which animals and plants normally live

Large coral reefs provide a natural cement / barrier between the ocean and the coast.

How do you say "desempenhar um papel" in English?

which word means protection from harm or change: precious / preservation

More than 500 million people depend of / on coral reefs for food or work.

Coral polyps reseale a chemical called calcium carbonate, which cements / barrier polyps together forming a coral reef.

What's the relationship among / between the coral reefs and their protectors called?

If you take away a species habitat it can/can't thrive.

If conditions are right a coral reef grown to become part of a species / massive extended family

If something is easily broken or harmed it is ....................................

Reefs are INSTRUMENTAL / INSTRUMENTS to ocean health.

A "critter" is: a living creature / a treasure

Coral are fragile animals affected / effected by pollution and changes in water temperature.

to grow very well, or to become very healthy or successful