The symbiosis between a fungus and the roots of a tree is an example of ________
A) mutual dependency
B) commensalism
C) trophic cascade
D) succession
E) mutualism
E
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Mixtures can be separated into their components by taking advantage of differences in the chemical properties of the components. Why might this separation method be less convenient than taking advantage of differences in the physical properties of the components?
A. Chemical properties are not as apparent as are physical properties. B. The chemical properties of the components of a mixture are too similar to each other. C. A chemical property involves a chemical change so that you no longer have what you had. D. The chemical properties of the components of a mixture are too different from each other.
The USGS evaluated the age of different parts of the Slumgullion feature by
A) measuring the size of trees incorporated into the material. B) measuring the temperature of rocks soon after the feature had moved. C) examining the development of soil. D) measuring the content of moisture during different seasons. E) None of these are correct.
Which of the following is not a reason for the energy deficit in the polar regions?
A) low sun angle B) diffuse insolation C) up to six months without insolation D) high albedo due to snow and ice E) little seasonal variability
Compared with other fundamental forces, the constant G shows gravity to be a relatively
A. strong force. B. novel force. C. weak force. D. extremely strong force.