i am going to take a stab at this
They require energy to live
Answer:
A bc it moves the bones in the arm and the muscles and the nerves are what send the signals to the muscles to move
Evidence for evolution, in other words evidence of common descent, include fossils, which have shown a (fairly) steady change in morphology over time for some species. An example would be horse hooves: we have fossils that show when they were still three toed, then two toed, then one toe in our present day horses. Another piece of evidence is vestigial organs. An example of vestigial organs is wings in some flightless birds, such as the kiwi. Their ancestors used it in order to fly across the marine barrier into New Zealand, but natural selection and random genetic drift made them quickly lose the ability to fly. Nonetheless, they still have their wings, however small. It can be assumed that eventually, their wings would be reduced to small stubs fused to other nearby bones, as has been observed in their cousins.
" <span>A </span>Characteristic<span> refers to the distinctive </span>qualities<span> that make up an individual. A </span>trait, on the other hand, is a feature of an individual which is inherited. The main difference between<span> a </span>characteristic<span> and a </span>trait<span> is while a </span>characteristic<span> needs to be built by a person and absorbed, a </span>trait<span> comes genealogically."</span>
<u>Answer:</u>
<em>The correct option is Option C i.e. its hydrophobic.
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<u>Explanation:</u>
The side chain of valine is isopropyl group. It is a hydrocarbon side chain. Isopropane is a hydrophobic compound. So as it joins with the amino acid skeleton as a variable group, it makes the whole amino acid hydrophobic.
Its hydrophobic nature is well evident from the disease of sickle cell anaemia. The replacement of hydrophilic glutamate by hydrophobic valine makes the interaction of haemoglobin by changing other components.
