What is the difference between slate and phyllite? What will be an ideal response?
Grain size. Phyllite grains are larger, although they are still too small to be seen. The grains give the
rock a glossy or lustrous sheen.
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The EPA issued regulations in 1997 that affected this size of particulates
A) smaller than 2.5 micrometers B) between 10 and 100 micrometers C) between 100 and 300 micrometers D) greater than 1000 micrometers (1 millimeter)
The cutting of large trees in a natural forest and subsequent sale of the logs for timber, is an example of
A) the consumptive use of a natural resource. B) the productive use of a natural resource. C) the minimum sustainable yield of a resource. D) the carrying capacity of a population.
Present carbon dioxide levels in the atmosphere are higher now than any time in the last 800,000 years
Indicate whether the statement is true or false
People with AIDS are more vulnerable to tuberculosis.
Answer the following statement true (T) or false (F)