Bear populations have decreased because humans have overhunted hears and occupied their habitat.
举一反三
- The<br/>farmers are very worried ,because a lot of crops have ______ for lack of rain. A: shrank B: withered C: decreased D: declined
- The market sales of toilet paper have decreased because ( ) A: Britons<br/>have cut their spending on it B: its<br/>prices have gone up over the years C: its<br/>quality has seen marked improvement D: Britons<br/>have developed the habit of saving
- It can be inferred from the passage that the polar bear population of Hudson Bay ________. A: is one of several polar bear populations B: is unfriendly toward humans C: consumes food voraciously (贪婪地) during the whole year D: is an endangered species
- Wild animals have been overhunted, and as ____ result, some of them are among the animals in ______danger. A: a; the B: a; / C: the; a D: / ; the
- _________ last year,traffic accidents have decreased by 10% this year.