1. It is only useful when the organism that is being identified was or is a part of organisms that are part of the key. An organisms is usually misidentified if it does not belong to the key.
2. It’s a complex mechanism of organism identification and may leads to chain of worng interpretations.
3. The characteristics which are devised to identify an organism might not be a distinct feature of the species already exiting in the dichotomous key.
4. Dependency on physical characteristics, does not take into account genetic characteristics
Birds migrating from colder to warmer climates - swarm behavior
Sharper vision to see at night - Nocturnal behavior
Cat hissing at it’s enemy - Predation Defense
A person consuming only those crops they produce while farming - Cultural Adaptation
D. It allows a variety of substances to dissolve in and around cells.
Explanation:
The shell of hydration is important to life because it allows a broad range of substances to dissolve in and around the cells.
- The shell of hydration allow for water to dissolve a wide range of substances and disperse them uniformly in it.
- Water serves a solvent capable of dissolving a wide range of substances because it forms a hydration shell round them.
- This allow for materials to be in solution around the cell.
- Diffusion and osmosis can readily now take place.
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Aortic regurgitation is a condition in which the heart's aortic valve is loosely closed which result in the flow of the blood from the aorta into the left ventricle in the reverse direction during ventricular diastole . Therefore, the cardiac muscle is compelled to function harder than normal. Left ventricular hypertrophy, shortness of breath (dyspnea) and pulmonary edema are the effect that aortic regurgitation produces in the body.