공통영어1 천재 조수경 4과 변형문제

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

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

Brightly colored coral reefs provide a beautiful underwater ____

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

Importance of ____ Reefs

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

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

Because of the diversity of life found in coral reefs, they are ____ called “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 in coral reefs.

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

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

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

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

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 as the “medicine ____ of the sea.

____ underwater treasures are under threat of destruction.

The more coral reefs become damaged, the more creatures ____ 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. reported ____ many of the world’s coral reefs are currently endangered.

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

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

What causes coral ____ to die?

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

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

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

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

Another serious cause is ____ waste.

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

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

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

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

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

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

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

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

The 3D printer creates ____ support for corals.

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

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

Actions ____ Save Coral Reefs

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

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

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

____ you can volunteer to help clean the beach.

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

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

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

This will make a big difference for the ____