How did the concept of fronts come about?
What will be an ideal response?
Answer: The concept started with Norwegian meteorologists during World War I. They made the analogy of masses of air battling like armies and the boundaries pushing back and forth along the landscape were likened to fronts on the battlefield.
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The U.S. has only a tiny fraction of the world's lithium reserves. Why is a concern?
A. Lithium is a key component in high-tech battery applications. B. Lithium is a key component in nuclear bombs. C. Lithium is needed for the manufacture of wind turbine blades. D. Lithium is a critical dietary supplement that everybody needs.
Identify the acid or base behavior of each substance in these reactions: H3O+ + Cl- ? H2O + HCl
A. H3O+ acts as an acid, Cl- acts as a base, H2O acts a base, HCl acts as an acid. B. H3O+ acts as an acid, Cl- acts as a base, H2O acts an acid, HCl acts as a base. C. H3O+ acts as a base, Cl- acts as an acid, H2O acts an acid, HCl acts as a base. D. H3O+ acts as a base, Cl- acts as an acid, H2O acts a base, HCl acts as an acid.
The envelope of gas surrounding the earth is the
What is the pathophysiology of decompression sickness?
A) Diffusion of nitrogen out of the tissues during too slow of an ascent B) An imbalance of nitrogen in the tissues and alveoli due to rapid ascent C) Increasing quantities of nitrogen and oxygen in the blood during descent D) Excess carbon dioxide accumulation in the muscles due to a rapid ascent