공통영어1 천재 조수경 4과 변형문제

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

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

Brightly colored coral reefs ____ a beautiful underwater landscape.

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

Importance of ____ Reefs

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

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

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

Nearly one quarter of all known marine species depend on coral reefs for survival — they hide themselves from predators, find food, reproduce, and raise their young ____ 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 rush toward shore, coral reefs serve as natural ____

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

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

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

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

These underwater treasures are ____ threat of destruction.

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

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

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

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

If swift action is ____ taken, scientists estimate that most coral reefs will be destroyed by 2050.

What causes ____ reefs to die?

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

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

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

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

Another serious cause is plastic ____

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

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

In recent years, advanced technologies have been put in ____ 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 ____ damaging their delicate bodies.

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

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

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

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

The ____ printer creates artificial support for corals.

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

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

Actions to ____ Coral Reefs

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

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

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

Second, you can ____ to help clean the beach.

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

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

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

This will make a big difference for the ____