Which of the following is incorrect regarding the spatial-temporal variability of net primary productivity?
A) Nutrient levels in oceans affect productivity.
B) Productivity rates in deserts is much less than that of tropical regions.
C) At temperate and high latitudes, the rate of carbon fixing is seasonally variable.
D) Net primary productivity is highest in the winter in the midlatitudes and high latitudes.
E) Productivity rates are constantly high throughout the year in the tropics.
D
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In peripheral cities, the informal sector often makes a significant contribution to the formal sector
Indicate whether this statement is true or false.
Which of the following describes the changes to the warm air at a warm front?
A. It rises and cools. B. It sinks and cools. C. It rises and warms. D. It sinks and warms.
What evidence can you identify in either photograph that indicates that the end of the glacier was once farther downslope than it was in 1955?
What will be an ideal response?
Evaporation
What will be an ideal response?