It would be letter D - A mutation occurs in one copy of the original gene.
Mutation is the changing of a structure of a gene that can be passed down to the next generations. It is the source of all evolution. As mutation progress through time, it leads to evolution.
The wind will blow from the higher pressure over the water to lower pressure over the land causing the sea breeze.
This causes the low surface pressure to shift to over the ocean during the night and the high surface pressure to move over the land.
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Air above land warms quicker than air over water.</em></u></h2>
Protons: positive
neutrons: no charge
electrons: negative
The human trachea is prevented from collapsing by the presence of Cartilaginous rings. <span>The walls of </span>trachea<span> contain c-shaped rings or cartilagenous rings. These soft bones provide rigidity to the </span>trachea<span> , that is why the walls of </span>trachea<span> doesn't collapse.</span>