(基因多样性)andmakingthemmorelikelytosufferfromdiseases.Habitatlosshasalsoremovedtheirprimaryfoodsources.___4___Exaggeratedclaimsofthekoalas’declinecanbedebunked(揭穿真相)withaquickGooglesearch,weakeningthetrustinscientificinstitutionsandreporting.Inaddition,thedefinitionof“functionallyextinct”meansthespeciesis“be...
social position and habitat quality. Dominant males tend to have large home ranges, and these areas are often highly respected by neighbouring koalas. Female koalas generally stay in the same territory as where they were born, while male koalas (with the exception of a few dominant and larger ...
【题文】 Koalas live in the eucalyptus (枝树)forests of southeastern and eastern Australia. They rely on the eucalyptus tree for both habitat and food. In fact, they seldom leave these trees. When not sleeping, they're usually eating. They can eat more than a pound of eucalyptus leaves ...
Koalasliveintheeucalyptus(枝树)forestsofsoutheasternandeasternAustralia.Theyrelyontheeucalyptustreeforbothhabitatandfood.Infact,theyseldomleavethesetrees.Whennotsleeping,they'reusuallyeating.Theycaneatmorethanapoundofeucalyptusleavesaday.Eucalyptusispoisonous,sothekoala'sdigestive(消化的)systemhastoworkhardtodigest...
the poisons and taking in the limited nutrients营养).T hat's why koalas sleep for 18 to 22 hours a day - they get very little energy from their diet.Koala numbers decreased in the late 19th andearly 20th century from hunting for their fur.Now they face serious threats from habitat loss...
T hat'swhy koal a ssleep fo r 1 8t o2 2hour s ad a y-theyg e tver ylittl eenerg yfr om their diet Koalanumber sdecreased i nth elat e19th and earl y2Ot hcentur yfromhunting fo rthei rfur .Now they fac e seriou sthreat sfrom habitatloss .Lan dclearing and bush fires-...
We observed individual differences and seasonal variation in the diet composition of radio-tracked koalas. These results suggest either flexibility in the diet choices of koalas, or individual preferences within groups of koalas. Our results also indicate that post-mining landscapes can provide habitat ...
Urbanization(城市化)hascut populations off from one another, lowering their geneticdiversity (基因多样性)and making them more likely to suffer from diseases. Habitat loss hasalso removed their primary food sources.___4___Exaggerated claims of the koalas’ decline can be debunked(揭穿真相)witha ...
living habitat C. digestive system D. born laziness73. Why does the koala spend most of its time sleeping? E. To escape from natural enemies. F. To save its energy. G. To protect itself from the sun. . To detoxify eucalyptus leaves.74. The underlined word “nocturnal” in the passage...
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