It is natural selection, as basically the environment causes a selection for those who have better adaptations to survive
<span>Cell membranes protect the cells that is why they are called the gatekeepers of the cell. A cell membrane can be internal or external like that of the case of eukaryotic cells with internal cell membrane. It is mostly made up of glycerophospholipids. This compound like other lipids is also soluble in water however, their unique geometry allows them to aggregate into bilayers without too much energy input. Cholesterol can also be found in the cell membranes however, it is not as abundant as the glycerophospholipids.</span>
I would say that this child may need iodine drops as it may be deficient in this or perhaps a synthroid type medication. Also, it may be wise for such a child to run on a treadmill about 3x per week as this raises the metabolic rate since it is cardiovascular activity.
Answer:
Sand, Silt and Clay
Explanation:
The sand is most coarse so it deposits easier and more often than the clay being finest, but there would still be clay just less of it than sand
