People may find it unbelievable that two hundred years ago people did not link illness     1     environmental problems. In London, drinking polluted water led     2     many deaths from cholera. It always started in the poor neighborhood, and then it spread to the richer areas as the servants infected     3     the illness passed it on. Many doctors suspected    4    polluted water was     5     (blame). John Snow’s     6     (finding) proved that the dirtier the water, the     7     (severe) the illness. Therefore, they concluded that water must be     8     (pure). They instructed the     9     (handle) be removed from pumps if the water carried the virus. Thanks     10    John Snow, cholera was defeated eventually.

3 . Every year about 40,000 people attempt to climb Kilimanjaro, the highest mountain in Africa. They bring with them lots of waste. The_________ might damage the beauty of the place. The glaciers (冰川) are disappearing, changing the_________ of Kilimanjaro.

Hearing these stories, I’m_________ about the place — other destinations are described as “purer” natural experiences.

However, I soon discovered that much has changed since the days of disturbing reports of_________ among tons of rubbish. I find a clean mountain, with toilets at camps and along the paths. The environmental challenges are_________ but the efforts made by the Tanzania National Park Authority seem to be_________ .

The best of a Kilimanjaro_________ , in my opinion, isn’t reaching the top. Mountains are regarded as spiritual places by many cultures. This_________ is especially evident on Kilimanjaro as climbers go through five ecosystems (生态系统) in the space of a few kilometers. At the base is a rainforest. It ends abruptly at 3, 000 meters,_________ lands of low growing plants. Further up, the weather__________ — low clouds envelope the mountainsides, which are covered with thick grass. I __________ twelve shades of green from where I stand. Above 4, 000 meters is the highland __________ : gravel (砾石), stones and rocks. __________ you climb into an arctic-like zone with__________ snow and the glaciers that may soon disappear.

Does Kilimanjaro deserve its__________ as a crowded mountain with lines of tourists ruining the atmosphere of peace? I found the opposite to be true.

5 . Born to an adventure-loving mom and a National Geographic’s photographer dad, Alison Teal was already exploring the world as a baby. The family traveled the globe staying not at five-star hotels but in a six-foot-wide tent. From cold mountaintops to hot jungles, they completely involved themselves in local nature and culture.

Between journeys, they would return home to a quiet and faraway part of the Big Island of Hawaii, where they built a solar-powered oceanfront rest center. The front yard was the ocean, and Alison’s friends were dolphins. She would dive into the water and release seaweed. A dolphin would catch it on its nose or fin and throw it to the next player. Over the years, the dolphins grew to trust Alison. They looked for her and came close to her in the water.

After graduating from university, she continued her world travels. Her adventurous childhood and life skills landed her a spot in the reality show Naked and Afraid, in which she and her partner had to live on an unwelcoming island for 21 days. Alison’s deep knowledge of how to live in a wilderness saved the pair, but what shocked her was the amount of trash washed upon the shore.

“After that, I couldn’t ignore our plastic problem. I shifted my focus and started to protect our greatest resource, the ocean,” says Alison. Swimming in familiar waters back home, she also found her dolphin friends were no longer tossing (抛) seaweed to each other, but plastic. “That was distressing,” she says.

Her book, Alison’s Adventures: Your Passport to the World, is fled with travel tales and environmental lessons. She also offers free adventure films to go along with each chapter on her YouTube and TikTok. Alison believes all of us can make changes to protect the Earth and, in turn, those we love. “Whether you’re a lawyer, a gardener, an artist, a teacher or a surfer, we can all help in our own ways,” she says.

7 . A tree planting initiative in Kenya has seen over 30,000 trees being planted. The Green Generation Initiative is a Kenyan charity that has been planting trees to counter climate change and the reduction in forest in the East African nation since 2016.

Founded by climate activist Elizabeth Wathuti, the initiative's primary focus is on developing young climate activists through environmental education in schools and addressing food insecurity in the region through planting fruit trees. Since its foundation, over 30,000 trees have been planted in Kenya, while thousands of school children have not just planted trees but adopted them to ensure that young people learn the importance of acting as a guardian of the health of the environment. The trees have recorded a survival rate of over 98 percent, as they continue growing from young trees to maturity.

Speaking to world leaders at the recent UN Climate Change Conference in Glasgow (COP26)，Elizabeth issued a serious warning about the threat of climate change: “Over two million of Kenyans are facing climate­related starvation. In 2025, half of the world's population will be facing water shortage. By the time I'm 50, the climate crisis will displace over 80 million people in sub­Saharan Africa alone.”

Elizabeth said, “I have been doing what I can.Inspired by the great Wangari Maathai, I founded a tree growing initiative that enhances food security for young Kenyans. So far, we have grown 30，000 fruit trees, providing desperately needed nutrition for thousands of children.” “Every day we see that when we look after the trees, they look after us. We are the adults on this Earth right now, and it is our responsibility to ensure that the children have food and water, ”she added.

9 . The Coral Sea is home to an amazing variety of turtles, sharks, whales, dolphins, large fish, birds, corals, plants, and many other species. Many of these species are endangered elsewhere in the world, but still survive in the healthy environment of the Coral Sea.

The Coral Sea is a large series of coral reefs located off the northeast coast of Australia. This area is three times larger than Australia’s famous Great Barrier Reef, which the Coral Sea borders.

The Coral Sea is one of the few coral reef environments that have remained largely undamaged by overfishing, oil and gas exploration and pollution. However, statistics show that coral reefs around the world are disappearing five times faster than rainforests. It is very likely that in the near future the Coral Sea will face the same threats to its existence.

The Australian government is currently looking at options for protecting the Coral Sea but has made no decisions. Environmentalists are pushing for laws to declare the Coral Sea area a marine protected area. This would mean a large “no-take zone” for fishermen, a no-exploration zone for gas and oil companies and a no-dump zone for pollution. This would make the Coral Sea a marine park larger than any in the world.

We can write letters to Australian leaders, Australian environmental protection agencies, and Australian friends, to let them know that people worldwide support this protection of the Coral Sea. To lose this last great marine wildness would be a loss for the whole world.

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