If you watch wolves, it's har d to escape the conclusion that perhaps no two species are more alike behaviorally than wolves an d human. Living as we do in families, we can easily recognize the social structures an d status search in wolf packs. No wonder Native Americans recognize d in...
【解析】 1.D.考查上下文逻辑.根据上面一段的"The t erm alpha male indicates a man who at every moment demonstrates that he's in control in t he home and who can become aggressive ."可知,大男子主义这个词表示一个男人,他在每个时 刻都表明他在家中可以控制并且可以变得具有攻击 性.故选D . 2...
The Global Tree Assessment identified nine tree threats (Table1)5. We aimed to determine the rates of recent change per threat for each species, calculated as a percentage of species’ extent (km2) that became unsuitable, damaged, or underwent a change in trend over the last 20 years (betwe...
A native of the Northwestern Hawaiian Islands, the Hawaiian Monk Seal is one of the earless seals that live on warm beaches, unlike other seals. This endangered marine mammal is one of the two remaining seal species—along with the Mediterranean monk seal. The third species from this family,...
Inquiline ants are highly specialized and obligate social parasites that infiltrate and exploit colonies of closely related species. They have evolved many times convergently, are often evolutionarily young lineages, and are almost invariably rare. Focus
“The first two or three days, it’s quite easy,” she says. “But the longer the experiment goes, the more they are like, ‘I need to sing.’” At that point, she’d tap the cage and tell them to stop singing. After a week, the birds’ singing muscles lost half their ...
First record of the genus Helius—long-rostrum cranefly from Maestrazgo Basin (eastern Spain, Iberian Penisula) is documented. Two new fossil species of the genus Helius are described from Cretaceous Spanish amber and compared with other species of the g
Much research ___(support)the conclusion that pollution from coal-powered electric generating stations in the Midwestern United States is the ultimate cause of the severe acid-rain problem in eastern Canada and northeastern U.S.第2题包括填连词 答案 1、became; 由后面的shed提示时态2、in; in和...
D.Interestingly,the results suggested that positive affect may go beyond helping teens build positive relationships. E.The results uncovered that negative affect might account for many life problems when a teenager became a young a...
Researchers compared the leg bones to other bird skeletons until a suit of characters unique to large and flightless parrots became evident. They inferred New Zealand once had a highly diverse subtropical flora that contributed to the evolvement of abnormally large parrots. ...