If all the Antarctic glaciers melt, which species will face extinction?

Earth Day, which just celebrated its 50th birthday, may be familiar to students. The theme of this year's Earth Day is "Climate Action". Melting glaciers, rising sea levels and increasing extreme weather are all well-known climate change phenomena. However, what is the biggest problem facing the earth's environment at present, and what should we do when caring for this planet? I believe many students don't know but want to know.

Here, let's follow the teachers of Gansu Science and Technology Museum to understand the severe test that climate change brings to the earth.

If all the glaciers melt, the face of the earth will be completely changed.

Recently, the performance of climate warming has become more and more obvious and intense. In June, 2020, the global average temperature was 5438+ 10, and on February 9, Brazilian scientists recorded a high temperature of 20.75℃ in Antarctica. This is the first time that the Antarctic temperature has exceeded 20℃ since records began! The temperature of more than 20 degrees Celsius may be the most suitable temperature for human survival, but it is the most deadly for Antarctica.

According to the latest data from NASA, in the past 40 years, the summer sea ice area in the Arctic has been reduced by nearly half, leaving only about 3.5 million square kilometers. Around 2040, there may be no ice in the Arctic Ocean, and the devastating consequence is the extinction of all kinds of creatures.

20 17 A paper published in the journal Science said that carbon dioxide emissions are directly related to the reduction of sea ice. They also proved that for every 1 ton of carbon dioxide emitted by humans, about 3 square meters of sea ice disappeared.

If all the glaciers melt because of global warming, the sea level will rise by 65 meters, the global average temperature will rise from 14℃ to 26℃, and the face of the earth will be completely changed. In Asia, many coastal cities will be flooded and submerged. The coastal areas of India will face the same fate, and the whole of Bangladesh will be swallowed up by the sea. Cambodia will become an island country. In Europe, the Netherlands will be the first country to disappear, and London, Venice, Marseille and Copenhagen will also disappear soon.

The area of the Black Sea and Caspian Sea will be expanded by 10 times. In North America, the entire east coast will sink to the bottom of the sea, including new york, Miami, Havana and Cancun. On the west coast, the hills of San Francisco will become islands. In South America, the Atlantic Ocean will flood into the Amazon Plain and Paraguay Basin, thus flooding Asunció n in Paraguay, Montevideo in Uruguay and Buenos Aires in Argentina. In Africa, Dakar, the capital of Senegal, Lagos, the largest city in Nigeria, and Cairo, the capital of Egypt, will all be flooded.

Every disaster on earth is a warning from nature. Reflecting on these disasters, the source is the destruction of biodiversity and ecological environment in nature, and human life and property will also face great threats.

April 22, 2020 is Earth Day and its 50th anniversary. The theme of this Earth Day is "Climate Action". The actions taken by human beings on the issue of climate change are facing great challenges and also contain great opportunities. Earth Day calls on all mankind in Qi Xin to make concerted efforts and take active actions to seize the great opportunity of a zero-carbon future and jointly cope with the climate crisis. Facing the same blue sky and living on the same earth, each of us has the responsibility to protect the environment and save the earth.

The world is really beautiful, but we have done too little for it.

Dealing with global warming begins with turning off the power supply of electrical appliances at will

Statistics show that 30% of the world's land is degraded by human activities; About 24 billion tons of soil is lost every year; More than 6,543,800 tons of oil are scattered into the ocean every year in the world. Malaysia's tropical rain forest has decreased by 4.72 million hectares in the past three years; The world's carbon emissions increase by 40 billion tons every year, the highest in 66 million years.

According to data from the World Health Organization, 650 million people around the world have no access to safe drinking water; About 55% of the agricultural land in the world has been degraded to varying degrees. ...

Faced with these, what can we do?

In fact, as long as you have the heart, it is not difficult to do it. Let's take a look at this small list to deal with global warming! Turning off the power supply of electrical appliances at will can reduce the production of carbon dioxide by about 972 hectares every year; Open more windows, use less electricity, and turn on the air conditioner for one hour to reduce carbon dioxide emissions by 0.1kg; If you drive less, you can avoid producing 0.6 1 kg waste gas when each car travels less than one kilometer; Reduce the weight inside the car. If you subtract the weight of sundries 10 kg, you can reduce gasoline by 2.5 liters a year; Use environmentally friendly chopsticks and carry them with you. Every time you reduce the use of 1000 pairs of disposable chopsticks, it is equivalent to cutting down 0.32 trees. Carry a handkerchief with you to reduce the use of facial tissues, which is hygienic and environmentally friendly;

Use alternative energy sources, use less oil and use more alternative energy sources, such as solar energy, wind energy and natural gas, to help the earth increase sustainable energy; Do not buy over-packaged gifts, reduce the amount of garbage per person and household 10%, and reduce the generation of carbon dioxide every year 1 166 kg; Planting trees, a tree can absorb about 1 ton of carbon dioxide in its lifetime.

Compared with the above countermeasures, the significance of protecting the environment is far-reaching. For ordinary people, protecting the environment may be saving a piece of paper at work, planting a tree in ANT FOREST, or turning on and off the low and high lights when driving at night. As long as you pay attention, you can change it. When the world turns gray all day, our life will lose its color, so please join hands to protect the environment and leave a touch of green for the future. Protecting the earth means protecting yourself.

How did Earth Day come about?

In the 1960s, there were many environmental pollution incidents in the United States. Nelson and Hayes, two Americans who are worried about environmental problems, held a folk activity with the theme of environmental protection in the spring of 1970. Unexpectedly, the event received a positive response from the American people, with about 20 million people participating, and the momentum was very huge. This day is April 22, which is later Earth Day.

Later, the awareness of environmental protection became stronger and stronger all over the world, and the activities and initiatives of Earth Day were also responded by more and more countries, regions and international organizations. Finally, on April 22nd, 1990, more than 200 million people from more than 40 countries all over the world took part in Earth Day. Since then, April 22nd has become a world-class environmental publicity day. On this day, every corner of the world publicizes the idea of caring for the earth in its own way.