题目
单项选择题
Question at position 4 One reason to be concerned with the health and stability of an ecosystem is that it will be better able to provide humans important services like cleaner water and air. What aspect of an ecosystem is an indicator its heath? Species richnessBiome typeGeographic extentProximity to human developmentAnnual rainfall
选项
A.Species richness
B.Biome type
C.Geographic extent
D.Proximity to human development
E.Annual rainfall
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标准答案
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思路分析
Question at position 4 asks which ecosystem indicator reflects health and its ability to provide services like cleaner water and air.
Option 1: Species richness. This measures how many different species are present in an area. In many ecosystems, higher species richness is linked to greater resilience, stability, and functioning, which supports ecosystem services such as water purification and air quality re......Login to view full explanation登录即可查看完整答案
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