The resistance of a conductor is proportional to its length. suppose that the lengths of the two samples were doubled. how would this affect their electrical resistance at 20 k?

a.) the resistance of both material a and material b would increase.
b.) the resistance of both material a and material b would not change.
c.) the resistance of material b would increase, but the resistance of material a would not change.
d.) the resistance of material a would increase, but the resistance of material b would not change.

Crossing over is a method of (blank)?

Nucleic acids offer variability because they contain alternate forms of genes called .

The us council on environmental quality, the world wildlife fund of the united states, the ecological society of america, the smithsonian institution, and the international union for the conservation of nature have proposed four principles of wildlife conservation. which of the following does not apply to wildlife conservation? a) continuous monitoring, analysis, and assessment b) ecosystem maintenance that includes wildlife c) a plan encompassing entire communities of organisms and all renewable resources d) a continued interest in harvesting populations for sport