공통영어1 천재 조수경 4과 변형문제

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

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

Brightly colored ____ reefs provide a beautiful underwater landscape.

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

Importance of Coral ____

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

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

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

Nearly one quarter of all ____ 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 billion ____ 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 reduced as they hit ____ coral reefs.

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

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

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

____ underwater treasures are under threat of destruction.

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

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

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

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

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

What causes coral reefs ____ die?

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

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

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

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

Another serious cause ____ plastic waste.

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

____ spreads viruses 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 ____ 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 ____ from a dangerous species of starfish.

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

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

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

The 3D ____ creates artificial support for corals.

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

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

Actions to Save ____ Reefs

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

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

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

Second, you can volunteer to help clean the ____

Recycling and reducing trash is a huge help in ____ 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 ____ coral reefs and what actions to take to save them.

This ____ make a big difference for the future.