Ozone is concentrated in the ________
troposphere
mesosphere
stratosphere
ionosphere
stratosphere
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Which of the following conditions causes hypoxia?
A. rapid change in atmospheric pressure B. extreme cold C. combined effects of heat and humidity D. lack of oxygen to the brain
What is the structure of carbon dioxide an example of?
a. An element b. An atom c. A compound d. A polar molecule
In urban areas, an increase in impervious surfaces ________
A) will cause more precipitation to fall B) will cause a decrease in runoff C) will cause less precipitation to fall D) will cause an increase in runoff E) does not influence water flow or precipitation
Which of the following is an intraspecific interaction?
A. Predation B. Mutualism C. Parasitism D. Territoriality E. All of these are examples of intraspecific interactions