Answer: All cells must show movement
Explanation:
The cell Theory states that:
- The cell is the structural and functional unit of life
- All living organisms are made up of cells
- All cells come from previously existing cells
- There is no life apart from the life of cells
- All living things are either with a single cell (unicellular) or a group of cells (multicellular)
Thus, the statement "All cells must show movement" is not a statement of the cell theory.
In certain areas of Africa, the sickle cell mutation has a high frequency because it confers an adaptive advantage against malaria which is endemic to this region.
<h3>What is natural selection?</h3>
Natural selection is a mechanism that drives evolution in natural populations, which in case we are observing stabilizing selection because it acts to stabilize the frequency of different alleles.
In certain regions in the African continent, the sickle cell mutation exhibits a high frequency since it is able to confer resistance against malaria which is an endemic disease located in this region.
Therefore, with this data, we can see that stabilizing selection acts to increase the frequency of the sickle cell mutation, which is harmful in regions where malaria is not endemic but increased in certain parts of Africa due to the incidence of malaria, thereby being an adaptive trait for these geographic areas.
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Renewable energy technologies have an enormous potential in the United States and that potential can be realized at a reasonable cost. Market research shows that many customers will purchase renewable power even if it costs somewhat more than conventional power.[1]However, both economic theory and experience point to significant market barriers and market failures that will limit the development of renewables unless special policy measures are enacted to encourage that development.[2]<span> These hurdles can be grouped into four categories:</span>
The expansion of the aorta causes a rise in blood volume and blood pressure.
<h3>What is the cardiac cycle?</h3>
Heartbeat pattern The cardiac cycle includes all of the physiological processes connected to a single pulse, including the electrical, muscular (pressures and volumes), sensory, and other activities. During each cardiac cycle, both ventricles and atria beat alternately.
<h3>Briefing:</h3>
The human heart's cardiac cycle includes two phases: ventricular relaxation and atrial contraction. The right ventricle has low pressure when the right ventricular systolic pressure is frequently less than 30 mm Hg. The left ventricle has a thicker wall and more muscle mass than the right ventricle as a result of the blood flowing at a high pressure. The expansion of the aorta causes a rise in blood volume and blood pressure.
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The answer is B.
Stabilizing.
