Along coastlines, sand dunes will most often begin to form and grow when ________
A) annual plants become established
B) diverse grasses and woody shrubs thrive
C) perennial grasses become established
D) erosion and subsequent deposition bring in the necessary sand
E) birds carry tree seeds to the area, which then become established
C
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If the Earth were twice as massive,
A. its pull on the Sun would double. B. its pull on the Moon would double. C. both of these D. none of the above
Promoting place identity is an important way of eliminating conflicts between places and stereotypes of other people
Indicate whether this statement is true or false.
Where do most shield volcanoes form—on the ocean floor or on the continents?
What will be an ideal response?
Which of the following is incorrect regarding the spatial variability of net primary productivity?
A) At temperate and high latitudes, the rate of carbon fixing is seasonally variable. 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 is much less than that of tropical regions.