A molecular clock is a method used by researchers that uses mutation rates in DNA to estimate the length of time that two species have been evolving independently. This provides evidence of evolutionary descent because it can link to common ancestors.
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a. Yeast, nematodes and brine shrimp use the same means to survive desiccation.
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This is the endoplasmic reticulum.
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Body sensors rely on identification and quantification of internal or external stimuli like pressure, heat, texture, vibration, and tensile or compressive deformations.
Speed is something pacing, increasing, or decreasing in its own acceleration. Velocity relates to speed because it is the same thing, except velocity is speed in a given direction.
