What is a fuel-wood crisis?
What will be an ideal response?
A fuel-wood crisis exists when people are forced to meet their fuel needs by cutting down trees faster than they can grow to replace the trees that are removed. This affects approximately 2.7 million people in 77 countries.
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Mike stands at the edge of a cliff and throws one ball straight up and another ball straight down, both with the same speed. Neglecting air resistance, which ball hits the ground below with the greater speed?
A. The one thrown downward B. The one thrown upward C. neither, both hit with the same speed D. need more information
Are either the Pratt or Airy models correct in understanding isostasy? What are the limitations to each model?
What will be an ideal response?
Soil with approximately equal amounts of sand, silt, and clay along with a generous amount of organic matter is called
A. caliche B. loam C. inorganic D. humus
Which immunoglobulins play a part in allergic reactions such as asthma?
A) IgA B) IgD C) IgE D) IgM