The correct answer to this question is this one: "<span>Since they eat lower on the trophic level and don't expend much energy they are able to grow larger."
</span><span>The giant baleen whales can grow so large because </span><span>they eat lower on the trophic level and don't expend much energy they are able to grow larger. </span>
Answer:
C. minimal intensity needed to just barely detect a stimulus.
Explanation:
Absolute threshold is one of the most important terms in psychophysics and refers to the minimum threshold for a stimulus to cause a sensation.
In other words, the absolute threshold is the minimum amount of energy for a stimulus to be detected in at least 50% of attempts. The higher the absolute threshold, the lower the sensitivity to stimuli.
RNA is a polymer with a ribose and phosphate backbone and four different bases: adenine, guanine, cytosine, and uracil. The first three are the same as those found in DNA, but in RNA thymine is replaced by uracil as the base complementary to adenine. This base is also a pyrimidine and is very similar to thymine.
2.5 billion years ago
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I think it's A.
B doesn't really limit cost, C just really isn't true, and D doesn't really sound right.