As shown in the figure below,the net primary productivity (NPP)in terrestrial biomes around the world is greatest in areas near the Equator that also receive high amounts of yearly rainfall.This pattern of NPP in terrestrial ecosystems suggests that

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The pattern of NPP in terrestrial biomes suggests that productivity is greatest in areas near the Equator with high rainfall. This suggests that NPP in terrestrial ecosystems is highly sensitive to temperature and available sunlight, as these factors are typically greatest in Equatorial regions. This is consistent with the fact that plants require sunlight for photosynthesis and that temperature can play a key role in determining the rates of biochemical reactions that underlie plant growth and development. Choice B is incorrect because the figure only pertains to terrestrial biomes, not marine ecosystems. Choice C is incorrect because there are limits to terrestrial productivity, as evidenced by variations in NPP across different biomes. Choice D is incorrect because marine-derived nutrients are not the primary driver of terrestrial productivity, although they can certainly influence it in certain cases (e.g. in riparian zones where nutrients from upstream can enrich soil fertility).

As Shown in the Figure Below,the Net Primary Productivity (NPP)in