Answer:
The Answer to that is that with evolution, different genes in the human body change, in order for us to adapt to different things. For example, at the end of the spine we have the so called "tail bone". Humans used to have tails, something our bodies' no longer need.
Explanation:
This may have been written wrong, but the first three are all possible. EE or Ee will show as a fish having two eyes, and ee will show as having only one. the percentage of chance for each is 75% for two eyes, and 25% for one.
<span>There are three basic chemical components of DNA - 1. Four "Nucleic acids", 2. Deoxyribose sugar, and 3. Phosphate backbone. The overall shape of the molecule is a double-stranded, double helix. It looks a bit like a spiral staircase wrapped around a spiral staircase. Phosphate groups outside, nucleic acids inside the helix,</span>
Answer:
The salt in the oceans comes from weathering and the erosion of the earth's crust.
Explanation:
The weathering can be described as the breaking down of rocks.
During the weathering of rocks, minerals will be dissolved from the land and salt is one of them. These minerals (salt included) will then be delivered into the oceans by erosion of the Earth's crust.
Erosion can be aided by wind, ice or water. Erosion removed weathered materials. When these weathered materials are removed, new materials (rocks) will be exposed to weathering thereby promoting continuous weathering processes
Answer:
During swallowing, a cartilagenous flap called epiglottis closes the entrance of wind pipe.
Explanation:
