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]
List three factors that could descri8u xyx -z j:ej+zbr0y1wx 6- j+keh7bu fe:n8hbe a species' niche.What is Factor 1; Factor 2 :exne fbk 6whj7+hu- 8and Factor 3?
A. predators ;altitude ;salinity
B. prey ;genetics ;precipitation
C. herbivores ;competitors ;photosynthesis
D. speciation ;parasites ;temperature
参考答案: A
本题详细解析:
Niche: the set of resources, abiotic and biotic factors :yhojkji 9t(2in which a species can survive and the interactions that(oij : 2hkyjt9 it has with them.
Abiotic factors: physical parts of an environment, e.g. altitude, salinity, precipitation and temperature.
Biotic factors: living parts of an environment, e.g. predators, prey, herbivores, competitors, and parasites amongst others.
Genetics: determines how a species looks and acts but does not describe the environmental conditions with which a species interacts.
Photosynthesis: the process by which plants convert sunlight into chemical energy. It is an amazing ability of plants but does not describe the environmental conditions with which a species interacts.
Speciation: the process by which a new species is formed. It does not describe the environmental conditions with which a species interacts.
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