The distribution of the human population in the
United States is
a. clumped.
b. random.
c. uniform.
d. constant.
e. homogeneous.
Answer: a
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Greenhouse gases
A) such as CO2, CH4, and N2O trap infrared radiation and heat the Earth. B) such as CO2 increase plant and animal growth, resulting in more heat production on Earth. C) such as CO2 and O3 (ozone) interact with UV light and heat the Earth. D) such as CO2, CH4, and N2O destroy O3 (ozone) and allow more UV light to enter the atmosphere, thus increasing the temperature of the Earth's surface.
Placing a ripe apple with other apples that are not ripe will cause the other apples to ripen sooner
Which type of plant hormone is responsible for this effect?
a. brassinosteroids b. ethylene c. auxins d. oligosaccharins e. abscisic acid
In autotrophic bacteria, where are the enzymes located that can carry on carbon fixation (reduction of carbon dioxide to carbohydrate)?
A) in chloroplast membranes B) in chloroplast stroma C) in the cytosol D) in the nucleoid E) in the infolded plasma membrane
Which of the following is the type of bond between molecules of water in a beaker of water?
A) ionic bond B) covalent bond C) hydrogen bond