If organisms are unable to generate enough genetic diversity to survive in a changing environment, they
A) may produce more offspring.
B) sometimes go extinct.
C) may evolve by non-genetic mechanisms.
D) will start to reproduce asexually.
B
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If weather satellites did not exist,
A) fewer radiosondes would be required B) radiosondes would be our principal means of measuring weather conditions and both the surface and in the upper atmosphere C) radiosondes would be our principal means of measuring weather conditions in the upper atmosphere
Trophic structure refers to the pattern of food source and consumption in an ecosystem
Indicate whether the statement is true or false
Dew point is the temperature at which the air is saturated
Indicate whether the statement is true or false
Which rock type makes up approximately 90% of the Earth's crust?
A) metamorphic B) rhyolitic C) igneous D) sedimentary E) plutonic