Answer:
Option-D
Explanation:
The skin toughness trait is determined by the genes which can control the components of skin like the amount of the collagen and the elastin. Also, the trait is influenced by the environmental factors which can act as a stimulus to either increase or decrease the components of the skin.
In the given case, when you walk barefooted develops the callus but when you walk with the shoes you do not develop calluses. Here the development of calluses is influenced by the environment which can lead to the increased production of collagen genetically which provides strength.
Thus, Option-D is the correct answer.
D. <span>It will increase to a maximum level.
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Answer:
When you add oil to vinegar and shake hard, you'll see small pockets of oil in the vinegar and vice versa, all mixed together in a suspension
Explanation:
Through air in much the same way as water waves travel through water. In fact since water waves are easy to see and understand they are often used as an analogy to illustrate how sound waves behave.
The function of an organism depends on its structure
