本题目来源于试卷: IB ESS Unit 2: Ecosystems & Ecology，类别为 IB环境系统与社会
[单选题]
Biomes are characterized by climatic patc0l;o k*gpx j:xwo1-rterns and other physi0lof)nk)k1fre zj) /mua h +;mcal variables. List the main factom;) onaku 0/zmj) r+k1hflef )rs that characterize the terrestrial biomes.
A. Temperatures and annual precipitation
B. Soil characteristics and precipitation
C. Wind patterns and type of vegetation
D. Altitude and proximity to water
参考答案: A
本题详细解析:
Many types of classificav7+-* pncljtnw+ 8mg ations have been used to map the terrestrial biomes, but the most useful one was developed by ecologist Robert Whittaker, who classified the biomes according to physical factors of temperature and average annual precipitation. Using these factors to classify different ecosysnptg8 l +j*n-wa7cm+v tems around the world puts similar ones in groups together - the biomes.
The pattern of distribution of biomes is linked to latitude (which has varying amounts of insolation leading to temperature differences) and patterns of atmospheric circulation cells (which determine rainfall).
Factors described in options B, C and D do vary between the biomes but are not the most robust in classifying the biomes as they also show some variation within a biome.
| 
