Which main-sequence stars are the most massive?
A) yellow B) red C) blue D) orange
C
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The expression ?F = 0
A. is a vector quantity. B. tells us that acceleration is zero. C. expresses equilibrium. D. all of the above
____is a measure of how much water a material can hold, and ___ measures how easily the material transports fluids
A)Porosity; permeability B)Sorting; permeability C)Infiltration capacity; permeability D)Permeability; porosity E)Infiltration capacity; porosity
In a population of field mice, an example of an adaptive trait that could help with reproduction and/or survival would be ________
A) being brightly colored so other mice could see it B) having shorter legs to be lower to the ground C) needing to eat more food than other mice its size D) spending less time searching when food is scarce E) having a bit more fur to withstand cold weather
Some flowering plants, such as beech drops and Indian pipe, lack chlorophyll and are not able to do ________.
Fill in the blank(s) with the appropriate word(s).