The fuel used in nuclear reactors is commonly uranium. Its unstable nature means that when it is hit with an electron it splits into two new atoms, one of which is Krypton. In the process of splitting large amounts of energy is released. This energy is used to heat water to produce steam, the steams rising energy is used to turn a turbine which produces the electric output of nuclear power stations.
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Differences in size between sexes are also considered secondary sexual characteristics. In humans, visible secondary sex characteristics include pubic hair, enlarged breasts and widened hips of females, and facial hair and Adam's apples on males.
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Answer:a minute cylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the development of spindle fibers in cell division.
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The peppered moths signified that animals are able to adapt to their environment in order to survive. This can be seen when moths evolved to a darker shade in order to survive and produce offspring.
<span>Hypertension is another term for high blood pressure. This occurs when there is too much pressure put on the blood vessels. The heart gets affected because it is pumping against the pressure, which causes strain on the heart. This can cause thickening of the heart walls, which can lead to other heart problems.
Stroke occurs when there blood supply to the brain is reduced or obstructed. This deprives the brain of oxygen and other nutrients. The occurrence of stroke increases with blood pressure because there is persistent pressure on the vessels which can ultimately lead to stroke. </span>
