If a cell has the same concentration of dissolved molecules as its outside environment, the cell's condition is referred to as being
A. isotonic.
B. hypertonic.
C. hypotonic.
D. hydrophobic.
E. hydrophilic.
A. isotonic.
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The most precise method of obtaining estimates of the absolute ages of geological deposits is
A. measure rates of sedimentary rock formation. B. measure the ratios of various radioactive isotopes in the deposits. C. apply the principle of superposition (younger deposits above older deposits). D. make salinity measurements in ocean sediment deposits. E. study the sequence of fossil types in the deposits.
The majority of evaporation of water occurs ____
a. from oceans b. in the upper atmosphere
c. onto land d. from land plants e. from surface ground water
The geneticist Theodosis Dobzhansky famously wrote that "nothing makes sense in biology except in the light of _________".
Fill in the blank(s) with correct word
Competitive exclusion is the result of ____ by two species for the same limiting resource.
A. mutualism B. commensalism C. competition D. symbiosis E. parasitism