Polar bears are beautiful animals that serve as an important part of the ecosystem (生态系统) in which they live. They can also be 61. ___ (frighten), and have been known to hunt and kill humans. However, they have lost a great deal of habitat as 62. ___ result of human activitie...
contributing towards a balanced Arctic ecosystem. That all changed in the 1700s when hunters from Europe, Russia, and North America began to rapidly cut into the polar bear population. Without any regulations, people were able to trap as many polar bears as they liked, and the species suffered...
The health and numbers of polar bears can serve as an indicator of the impacts of climate change on the Arctic ecosystem. 3. Cultural and economic significance: Polar bears are of great cultural and economic importance to indigenous communities in the Arctic. They hold cultural value as a ...
青酸北农青酸北农In the Arctic ecosystem, polar bears are at the top of the food ___.青酸北农青酸北
Learn about the polar bear food chain. Explore the characteristics of the food chain in the arctic and see examples of consumers in the polar bear...
Climate change has a great impact on the ecosystem. For example, the polar bears are losing their habitats because the ice in the Arctic is ___. A. melting B. freezing C. expanding D. shrinking 相关知识点: 试题来源: 解析 A。解析:本题考查动词的用法。由于气候变化,北极的冰正在融化,这...
In conclusion, polar bears are iconic and unique inhabitants of the Arctic. Their extraordinary adaptations, beautiful appearance, and importance in the ecosystem make them truly remarkable. It is our responsibility to protect and preserve their fragile habitat to ensure a future where these magnificent...
We should also support conservation efforts that aim to restore and protect the Arctic ecosystem. Moreover, we can raise awareness about the plight of polar bears. Through education and campaigns, we can inform people about the importance of protecting these animals and encourage them to take ...
We learned so much about polar bear families and the importance of protecting their fragile ecosystem. This tour is perfect foranyone who wants to create lasting memories in the Arctic. For my daughter and I, this was a great shared experience. This tour was the highlight of our Arctic ...
It is important to study polar bears to assess the health of the ecosystem on the Arctic, because()A.they are on the edge of extinction.B.they are on the top of the ecosystem.C.the food chain on the Arctic depends on them.D.there are no other big anima