The Antarctic: Key to Planet Earth

The first people to reach the South Pole—in modern times, anyway—were Roald Amundsen and the Norwegian Antarctic expedition, in December 1911. Explorers had been trying to reach the Antarctic for over a hundred years because it represented the serious     1     : the coldest and windiest continent in the world.

Nowadays, scientists from over 27 countries work in the Antarctic all year round and there is even a small amount of tourism in the summer months. Since the 1960s, people have come to realize that the Antarctic holds the     2     to the history of our planet.

Antarctica has preserved valuable evidence of the natural history of our planet. Evidence from fossils shows how life     3     during geological time. The Antarctic has a crucial role to play in helping us understand global     4     .

The Antarctic provides valuable information about what is currently     5     to the ozone layer and about global warming. Scientists are also discovering that the ice sheet may contribute to changes in sea level. What happens in Antarctica will     6     the world’s climate and the world’s oceans. This is why the Antarctic is now one of the most     7     regions of the world, in terms of regulations concerning pollution.

Up until the 1960s, some species of whale and seal were driven almost to     8     by human activities in Antarctica. However, due to greater environmental awareness, all plants and animals in Antarctica are now protected by regulation. Commercial fishing is strictly limited and severe measures aim to     9     illegal fishing. There are also strict measures to control marine pollution.

Antarctica provides information on the past, present and future of our planet, and controls major issues in the rest of the world. In this sense, Antarctica is a(n)     10     because it tells us what we have done wrong. It is also a lesson because the regulations in force there show us what can be done and what must be done for the environment. It is up to us to listen and act, before it is too lat.

Should we be rewilding more land?

Every day in the US, 6,000 acres of open land are cleared for various purposes such as farming, housing, roads, and others. This has led to concerns among scientists     1     believe that losing more open land can harm the planet. Natural habitats such as untouched forests, grasslands, and waterways provide numerous benefits     2     wildlife habitats, clean water, and reduced air pollution. To counter this trend, efforts are underway     3     the world to return animals and plants to certain areas. However, some people argue that rewilding is     4     expensive and risky process that may not work and could cause harm.

Despite the potential risks, rewilding can help slow down climate change by restoring forests that absorb harmful gases like carbon dioxide. It can also prevent species from     5    (die) out and reset natural ecosystems. For example, gray wolves     6    (reintroduce) in Yellowstone National Park in 1995, after being hunted to extinction there. The wolves reduced the booming population of elks (麋鹿),     7     gave the plants the elks ate a chance to thrive and serve as habitat for animals like beavers and birds.

    8     its environmental benefits, rewilding can also provide jobs for workers and scientists and attract visitors to an area. Despite the potential concerns and risks     9    (associate) with rewilding, it is an important tool for protecting the planet and its diverse ecosystems. As such, efforts     10     be made to ensure that rewilding projects are conducted responsibly and with careful consideration of their potential impact on the environment.

3 . Are you worried about the planet and tired of waiting around for things to change? Go ahead and take a closer look at the various options available to volunteer for the environment!

Sustainable Agriculture If you decide to volunteer for a sustainable agriculture project, you’ll definitely learn some interesting sustainable farming techniques. You will be learning these techniques from locals or teaching them to the local farmers so they can implement these techniques on their own. Best Places to Volunteer: Central or South Africa, India, Nepal, Indonesia and the Philippines.

Marine Conservation Volunteers for marine conservation should naturally be attracted to water. It’s important that you don’t fear diving and have a strong interest in learning to dive during your stay. While volunteering, your task as a volunteer will be to help research, maintain and grow the unique marine biology. Best Places to Volunteer: The Bahamas, Cuba, Peru, South Africa, Indonesia, Spain and Italy.

Nature Conservation Conservation projects are dedicated to protecting the natural environment of a specific location. Tasks here may vary greatly depending on the program but it will require volunteers to study the environment and learn about the local wildlife species. You’ll be monitoring the environment and retrieving data while taking action to preserve the local species of fauna and flora. Best Places to Volunteer: Madagascar, the Maldives, South Africa, New Zealand and Russia.

Renewable Energy and Water Projects focused on energy and water create ways for communities to access sustainable energy and water sources. These programs are dedicated to designing system improvements and creating a sustainable supply of energy and water. It’s important for conservation volunteers to evaluate the needs of the community and implement actions to solve these issues. Best Places to Volunteer: Peru, Costa Rica, El Salvador, India and Cameroon.

Requirements: With so many subcategories and such a wide array of organizations, the required skill set will vary for each program. English is the main language on all projects so it’s important that conservation volunteers have a good understanding of English. For projects in South America, you will find it helpful to have a basic knowledge of Spanish.

5 . Everybody loves to hate invasive species. The international list of invasive species—defined as those that were introduced by humans to new places, and then _________ — runs to over 4,000. In Australia and New Zealand hot war is fought against introduced creatures like cane toads (蔗蟾蜍) and rats.

Some things that are uncontroversial (无争议的) are nonetheless foolish. With a few important exceptions, campaigns to   _________ invasive species are merely a waste of money and effort — for reasons that are partly practical and partly philosophical.

Start with the practical arguments. Most invasive species are neither terribly successful nor very _________ . Britons think themselves surrounded by foreign plants. _________ , Britain’s invasive plants are not widespread, not spreading especially quickly, and often less of a(n) _________ than vigorous native plants. The arrival of new species almost always _________ biological diversity (多样性) in a region; in many cases, a flood of newcomers drives no native species to extinction. One reason is that invaders tend to colonise _________ habitats like polluted lakes and post-industrial wasteland, where little else lives. They are nature’s opportunists.

The philosophical reason for starting war on the invaders is also _________. Elimination campaigns tend to be   _________ by the belief that it is possible to restore balance to nature — to return woods and lakes to the state before human   ____________ . That is misguided. Nature is an everlasting mess, with species constantly emerging, withdrawing and hybridizing (杂交). Humans have only quickened these processes. Going back to ancient habitats is becoming ____________ in any case, because of man-made climate change. Taking on the invaders is a(n) ____________ gesture, not a means to an achievable end.

A reasonable attitude to invaders need not imply passivity. A few foreign species are truly ____________ and should be fought: the Nile perch – a fish, has helped drive many species of fish to extinction in Lake Victoria. It makes sense to ____________ pathogens (病菌), especially those that destroy whole native tree species, and to stop known agricultural pests from gaining a foothold. Fencing off wildlife reserves to create open-air ecological museums is fine, too. And it is a good idea for European gardeners to destroy Japanese plants, just as they give no space to native harmful grasses like bindweed and ground elder. You can garden in a garden. You cannot garden ____________ . That is universally accepted.

Food delivery apps are changing the way we eat

It’s raining, it’s dinnertime, and the fridge is nearly empty. Years ago, we made do; today, we order food through our phones. Within twenty minutes, we get whatever it was we were craving, we’re warm and dry, and there’s not a single dish to wash afterward.

Food delivery apps have altered the     1     of how eat, particularly in big cities. The industry is a complex machine; there’s Meituan, Ele.me, Hema…the list goes on. These companies are     2     and changing at a rapid rate, bringing on the rise of virtual restaurants and ghost kitchens, and customers who will never step inside a brick-and-mortar shop（实体店）.

Of course, these apps bring all types of cuisines around the city to our fingertips, but it comes at a cost. And one of the real environmental     3     lies in all that plastic and excess food.

In the US alone, packaging accounts for 30 percent of municipal solid waste. In 2017, that meant 80.1 million tons. Food delivery systems are likely     4     this huge number to rise. Durable materials like the plastics serveware is made from, are difficulty to     5     of.

Restaurant delivery is a global phenomenon – as is the impact on the environment. Meituan, one of the leading Chinese delivery platforms, delivered 6.4 billion food orders in 2018. It is estimated that China     6     1.6 million tons of packaging waste(containers, utensils, plastic bags) in 2017, nine times more than in 2015.

In the EU, University of Manchester researchers estimate, over two billion single-use takeaway containers are used every year. Most of those are not     7    . According to the European Commission, packaging, which includes plastic utensils, plates, and straws, make up 70% of all     8     pollution found in European seas.

Plastic bans,     9     packaging materials, and other efforts to cut down on waste are on the rise. Food delivery apps should, too, do their part to raise awareness for plastic pollution and     10     the gap between food waste and hunger.

8 . Science may never know the secrets to memories of the California sea hare, a foot-long sea snail. But a research team claim to have made progress in _______ the simplest kind of memory a mollusk (软体动物) might form, and, with a swift injection, managed to _______ one sea snail’s memory to another.

The kinds of memories that start a defensive reaction in the snails are encoded not in the _______between brain cells, but in RNA molecules (分子), according to David Glanzman, a biologist at UCLA. To _______ the idea, Glanzman implanted wires into the tails of California sea hares and gave them a series of electric shocks. The procedure made the animals so _______ that when they were touched, they contracted parts of their bodies intensely. Glanzman compares the reaction to being nervous after an earthquake: the memory of the event causes a(n) _______ response to any loud noise. After sensitizing the sea snails, Glanzman took RNA out from them and _______ it into new sea snails to see what would happen. He then found the new ones are _______ sensitized, suggesting the “memory” of the electrical shocks had been transplanted. According to Glanzman and his research team, the experiment shows that _______ parts of the memory trace are held in RNA, rather than in the connectivity of brain cells.

However, the work has not yet found widespread ________. “Further work needs to be carried out to determine whether these phenomena are obvious and what is the ________ of such phenomena,” said Prof Vann at Cardiff University. “While a sea snail is a fantastic model, we must be very ________ in drawing comparisons to human memory processes, which are much more complex.”

Tomás Ryan at Trinity College Dublin, is ________. “This work takes us down an interesting road, but I have doubt about it and I don’t think they’ve transplanted a memory,” he said. “This work tells me that maybe the most basic behavioral responses involve some kind of change in the animal.”

10 . Yvonne Morones, who has a pet dog named Scamp the Tramp, is talking with the Pet Journal about Scamp.

When I saw Scamp on Petfinder, all of a sudden I understood what love was like. I suddenly found I loved him because I fell in love with his face.

He’d been living on the street in Compton, California, and people were feeding him McDonald’s. And his name was Muffin Man, which didn’t seem to fit him at all.

It’s au naturel! He does get a mango shampoo and a coconut conditioner, but these gray dreads just appear on his head, back, and tail. The pet hairdresser says his hair is uncontrollable.

The first time he went to the senior center with me, the seniors just laughed and said, “Yvonne, what have you got there?” Then they fell in love with him. They’ll even write little adventure stories about Scamp. He just inspires people.

He’s no longer Scamp the Tramp. He’s now Scamp the Champ. Now I have to get him a new dog tag.