<u>Answer:</u>
<em>In highly diverged lineages, the substitutions process will occur at sites that have been substituted previously</em>.
<u>Explanation:</u>
Molecular clock uses the mutation rate to reduce the time in prehistory when the life forms are diverged. <em>The molecular clock uses the sequence of amino acids and nucleotide sequence for the DNA.</em>
This clock does not measure any time but the number of mutations, and other changes over certain time. <em>Sometimes its useful property might be limited due to the highly diverged lineages.</em>
The correct answer is option B
The fishes that live in the shallow water along the sea floor needs a flattened shape and eyes on the dorsal side because they need to see above and have least possibility that the eyes will be required to see downwards as they lie at the sea floor.
They have tail for protection and flattened body for easy swimming.
Example: Stingray.
Answer:
Ion
Explanation:
An Ion is exactly as stated it bears either a positive or negative charge.
Both have an inverse relationship.
Explanation:
The two have an inverse relationship, that is, when elevation increases, atmospheric pressure decreases.
This is due to the amount of air on top of you at your current elevation.
At lower elevations, you have more air above you, and thus more pressure.
At higher elevations, you have less air above you, and thus less pressure.
At high elevation food takes longer time too cook due to low pressure, so at high altitude pressure cooker is used to cook food.
OK, :)
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