21stcentury 3 unit 6

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

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

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

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

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

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 ....................................

The areas in which animals and plants normally live

Reefs are INSTRUMENTAL / INSTRUMENTS to ocean health.

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

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

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

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

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

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

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

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

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