A. Polar bears' fur has no pigment. B. Polar bears' fur is hollow. C. Polar bears' hairs are colourful. D. Polar bears' hairs are transparent.What makes polar bears at the zoo look green? A. Prey. B. Algae. C. Snow. D. Light.What is the best title of this passage? A. The...
阅读以下文段,按要求作答You probably know of grizzly bears(大灰熊) and polar bears(北极熊),but what are“pizzlies”or“growler bears"? These are the terms for a grizzly bear and polar bear hybrid(杂交). Experts think these kinds of hybrids are becoming more and more common.They are calle...
Sometimes you're hartK难的) to see the polar bears because their coats are yellow white. They have very warm coats because it is cold there. An adult (成年的) bear can be three metres long and weigh (重) 450kg. It can stand up on its back legs because it has very large and ...
It’s not just climate change that is endangering polar bears. The oil and gas industry has presented some threats of its own. Polar bears rely on their habitat in the Arctic to survive. With the oil and gas industry comes oil exploration which also introduces oil spills. If a polar bear...
Polar Bears: Polar bears, orUrsus maritimus,are a species of bear found in polar regions within the Arctic Circle. Polar bears are apex predators that feed on a variety of animals, especially species of seal found in the arctic waters. ...
细节题。由最后一段第二句 “Climate change is causing the disappearance of sea ice from which polar bears hunt seals.” 可推断北极熊灭绝的一个主要原因是气候变化导致冰川融化,而冰川融化导致北极熊找不到食物。而由最后一段倒数第二句 “but it does not protect the bears against the biggest man-mad...
The bus driver has a style of driving and it’ s fun to try to figure it out the first hour or so. If the driver is particularly reckless or daring, the fide can be as thrilling as a suspense story. Will the driver pass the truck in time? Will the driver move into the fight or...
What do polar bears eat? Polar Bears: Polar bears are mammals that live in the Arctic Ocean. Specifically, polar bears are called marine mammals because they spend so much of their time on the ice of the Arctic Ocean. Polar bears spend much of their time swimming and can swim as fast ...
What Will Happen to the Polar Bears?
48K Investigate the reasons polar bears are endangered and what endangered species status means. Explore polar bear habitats, how climate change causes habitat loss, their dwindling food supply, and the effects of oil and gas mining on their habitat. Related...