객관식
Which of the following is a common adaptation that helps animals in the taiga survive the extreme cold of winter?
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48. Ecology
Introduction to Ecology
객관식
Which of the following best explains how current and oxygen content affect the biodiversity of streams and rivers?
A
High current and low oxygen content increase biodiversity by favoring only fast-swimming species.
B
Low current and low oxygen content increase biodiversity by reducing competition among species.
C
High current and high oxygen content generally increase biodiversity by supporting a wider range of aquatic organisms.
D
Biodiversity in streams and rivers is unaffected by current or oxygen content.
검증된 단계별 안내1
Understand the concept of biodiversity: Biodiversity refers to the variety of life forms in a given ecosystem, including different species of plants, animals, and microorganisms. In aquatic ecosystems, factors like current and oxygen content play a significant role in determining biodiversity.
Analyze the role of oxygen content: Oxygen is essential for the survival of most aquatic organisms. High oxygen levels support a greater variety of species, including those with higher metabolic demands, as it ensures sufficient oxygen for respiration.
Examine the impact of current: High current in streams and rivers can help maintain oxygen levels by promoting aeration (mixing of oxygen into the water). It also prevents the accumulation of pollutants and sediments, creating a healthier environment for aquatic organisms.
Combine the effects of high current and high oxygen content: Together, these factors create favorable conditions for a wide range of aquatic organisms, including both fast-swimming species and those that rely on stable oxygen levels. This leads to increased biodiversity.
Conclude that biodiversity is influenced by environmental factors: High current and high oxygen content generally increase biodiversity by supporting a wider range of aquatic organisms, as opposed to low current or low oxygen content, which may limit the variety of species that can thrive.
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