International treaties help protect wild species and thus help maintain biological diversity.
Answer the following statement true (T) or false (F)
True
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The high speed needed to put a satellite in circular orbit is to
A. attain a path that matches Earth's surface curvature. B. get it above Earth's gravitational field. C. both of these D. none of the above
The occurrence of persistent phytoplankton blooms in an area where runoff from fertilized farmland enters the ocean
is an example of ____________. Fill in the blank(s) with the appropriate word(s).
If the earth were in a cooling trend, which process below would most likely act as a positive
feedback mechanism? a. increasing the snow cover around the earth b. increasing the water vapor content of the air c. decreasing the amount of cloud cover around the globe d. increasing the carbon dioxide content of the air
A ground fire in a pine forest in southern Florida
A) makes crown fires more likely in the burned regions. B) will cause the permanent extinction of small plants in the burned regions. C) will kill most of the pines in the burned area. D) promotes nutrient cycling in the burned regions.