Natural selection is the process in nature by which organisms better adapted to their environment tend to survive and reproduce more than those less adapted to their environment. For example, treefrogs are sometimes eaten by snakes and birds.
Osmolality tests is performed to determine the level of a certain nutrient present in the blood and urine.
What is osmolality test?
Osmolality tests measure the level of certain substances in blood, urine, or stool.
The level of glucose(sugar), urea( waste product made in the liver), sodium, potassium, and chloride are measured in osmolality test.
Osmolality test is also performed to check the balance between water and certain chemicals in blood.
Osmolality test also done to diagnose dehydration .
Therefore,osmolality test is done to determine the level of a certain nutrient in blood or urine sample.
Learn more about osmolality test here:
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Answer:
Water is polar and oil is nonpolar so the substances won't mix.
Explanation:
Water is polar covalently bonded within the molecule. This unequal sharing of the electrons results in a slightly positive and a slightly negative side of the molecule. oils are nonpolar, so they will remain separate from molecules of a polar solvent such as water.
Seed dormancy allows for a seed to germinate only when the conditions are right to support the germination and growth of the plant. This adaptation, therefore, increases the chances of survival for the plant. Natural selection, which powers evolution, will always favor desirable traits which will be entrenched in a population through successive generations.
