Multiple Choice
In an aquatic ecosystem, which factor generally least influences the rate of photosynthesis (primary production) compared with light intensity, nutrient availability, and temperature?
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52. Ecosystems
Factors Impacting Primary Production
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In the context of factors impacting primary production, which of the following environmental factors can directly affect the rate of photosynthesis?
A
Atmospheric pressure at sea level
B
Light intensity
C
Earth’s axial tilt
D
Tectonic plate movement
Verified step by step guidance1
Understand that primary production refers to the process by which plants and other photosynthetic organisms convert light energy into chemical energy, primarily through photosynthesis.
Identify the environmental factors listed: atmospheric pressure at sea level, light intensity, Earth's axial tilt, and tectonic plate movement.
Recall that photosynthesis requires light energy, so light intensity directly influences the rate at which photosynthesis occurs by affecting the energy available for the process.
Consider that atmospheric pressure at sea level generally remains constant and does not directly influence the photosynthetic process.
Recognize that Earth's axial tilt and tectonic plate movement affect climate and geography over long periods but do not directly impact the immediate rate of photosynthesis.
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