Which of the following best describes the spatial variability of net primary productivity?
A)At temperate and high latitudes,the rate of carbon fixing is constant.
B)Productivity rates are constantly high throughout the year in the tropics.
C)Net primary productivity is highest in the fall and winter in temperate and high latitude areas.
D)Productivity rates in deserts are much greater than those of tropical regions.

Question

Quizplus · Accepted Answer

The statement "Productivity rates are constantly high throughout the year in the tropics" best describes the spatial variability of net primary productivity. This is because the constant availability of sunlight and favorable climate conditions in the tropics allow for high rates of photosynthesis and carbon fixation, resulting in high levels of primary productivity throughout the year. Option A is incorrect because productivity rates vary seasonally in temperate and high latitude areas, with peak productivity occurring during the summer months. Option C is also incorrect for the same reason as option A. Option D is inaccurate as deserts typically have low primary productivity due to their arid climate and sparse vegetation.

Which of the Following Best Describes the Spatial Variability of Net