공통영어1 천재 조수경 4과 변형문제

When you go deep into the ____ you can see a variety of marine animals including corals.

Over the course of many years, corals build up to form large structures called ____ reefs.

Brightly colored coral ____ provide a beautiful underwater landscape.

However, ____ is not the only reason they are valuable.

Coral reefs are crucial ____ that protect both marine life and people living near the sea.

Coral reefs provide shelter to an abundance of marine life, such as fish and ____ plants.

Because of the ____ of life found in coral reefs, they are often called “the rainforests of the sea.”

Nearly one quarter of all known marine species ____ on coral reefs for survival — they hide themselves from predators, find food, reproduce, and raise their young in coral reefs.

As far as humans are concerned, over half a billion people ____ on coral reefs for safety and survival.

When large waves generated by storms ____ toward shore, coral reefs serve as natural barriers.

The force of the waves is reduced as ____ hit the coral reefs.

Consequently, they prevent the land on the shore from washing away ____ thus protect towns near the sea.

Moreover, reefs are ____ source of medicine, and many organisms found in coral reefs are used to treat diseases like cancer.

This is why they are sometimes referred to ____ the “medicine chests of the sea.

These underwater treasures ____ under threat of destruction.

The more coral ____ become damaged, the more creatures relying on them will lose their homes.

Thus, the increasing loss of coral reefs might lead to the destruction ____ the entire marine ecosystem.

The U.N. reported that ____ of the world’s coral reefs are currently endangered.

In fact, nearly half of Australia’s Great Barrier Reef, the world’s ____ has disappeared.

If swift action is not taken, scientists estimate that most ____ reefs will be destroyed by 2050.

There are various causes, like destructive fishing techniques, ____ of corals’ natural enemies, and careless tourism.

However, the leading cause is the rise in water temperature due to global ____

The ideal temperature range for corals to live ____ 20°C to 28°C.

When the water temperature rises above 30°C, coral reefs turn ____ and eventually die.

____ serious cause is plastic waste.

____ products, such as bottles and fishing lines, have been dumped into the sea.

This spreads ____ and diseases, damaging coral reefs and their inhabitants.

In recent years, advanced technologies have been put ____ place to save coral reefs by monitoring, protecting, and restoring them in quick and efficient ways.

Researchers from Florida introduced a soft jellyfish-like robot to monitor coral reefs without damaging their delicate ____

In addition, ____ Australian research team invented an intelligent underwater robot to protect coral reefs from a dangerous species of starfish.

The robot uses a camera and computerized vision ____ to scan the reefs and identify this starfish.

When it encounters one, the robot uses a foldable arm to inject ____ toxic salt into the starfish and eliminate it.

Meanwhile, 3D printing systems have been proposed ____ Hong Kong as one way to restore coral reef structures.

____ 3D printer creates artificial support for corals.

An example is a block made of mud that lies on the ____ of the ocean.

It is shaped in a way that ____ corals to attach to it and grow easily.

Here are some simple but effective steps we ____ take in order to help protect coral reefs.

First, ____ can avoid using beauty products containing tiny pieces of plastic because they pollute the oceans.

Also, ____ not to use sunscreen made with certain chemicals that damage corals.

Second, you can volunteer to ____ clean the beach.

Recycling ____ reducing trash is a huge help in maintaining a clean ocean.

Last but not least, make it known that coral reefs are ____ danger by spreading the word to people around you.

Let people know about the threat to coral reefs and what ____ to take to save them.

This will make ____ big difference for the future.