Why is clay poor soil?

A) It doesn't allow sufficient drainage.
B) It does not contain organic matter.
C) Clay particles pack so tightly there is little air in clay soil.
D) all of the above


D

Environmental & Atmospheric Sciences

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Nacreous clouds form in the ____

a. troposphere b. stratosphere c. ionosphere d. mesosphere e. thermosphere

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Demography and population geography are different types of studies because the former focuses upon statistical analysis whereas the latter emphasizes spatial analysis.

Answer the following statement true (T) or false (F)

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Which combination of factors would best lead to convection?

A) low viscosity, low mass, and low heat conductivity B) high viscosity, high mass, and high heat conductivity C) low heat conductivity, low mass, and high viscosity D) low viscosity, low heat conductivity, and high mass

Environmental & Atmospheric Sciences

Raising young children who crawl about the floor, a mother does not want to spray chemicals in or around the home. However, she is aware of West Nile virus spread by mosquitoes and Lyme disease spread by ticks

Therefore, she decides to develop a different strategy. Carefully examining and repairing the window screens, window enclosures, and doorways, she closes up any cracks or tears where bugs might get in. This mother is protecting her children by using A) cultural control. B) natural enemies control. C) genetic control. D) natural chemical control.

Environmental & Atmospheric Sciences