【简答题】A biome is a major biotic community characterized by the dominant forms of plant life and the prevailing climate. It is a major ecological community, extending over a large area and usually characteri...
【简答题】At the beginning of the 20th century there were more than a million lions worldwide. Today there are less than 30,000 in the wild. The remaining lions are increasingly threatened by habitat loss, hunt...
【简答题】Have you ever seen the man in the moon? If you look closely at the moon on some nights, you can see the face of the man in the moon. Some people say that they can see an old man carrying sticks. 小题1: ...
【简答题】_______ are used in plains where rainfall is less and climate is moderate. ______ are preferred wherever rainfall is more. _____ are used to cover large column free areas required for auditoriums, fac...