Answer:
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Explanation:
Examples of natural systems include: real number system, solar system, and planetary atmosphere circulation systems.
Natural physical systems include the solar system and an animal's digestive system. Human-made physical systems include mechanical systems, optical systems, electrical systems, and combinations of these. The names of these systems come from the type of energy they use.
Decreasing levels of __progesterone__ lead to sloughing, or shedding, of the endometrial lining.
Human evolution and natural selection both greatly relate to the susceptibility of a disease. For every disease that passes through, there will likely be a small handful of people who happen to be immune.
For example, the Black Death was a plague that peaked in Europe around year 1350. This disease unfortunately killed hundreds of people, but there were the select few who were immune. Later, these people had children and passed the trait down. The trait has likely continued to be passed down to the point where a majority of the population is likely immune to this particular disease.
This is an example of both human evolution and natural selection. Humans have evolved and passed this "immunity" trait down to children and grandchildren, and now it is unlikely that many people will be affected if this disease happens to pass through again.
This is also an example of natural selection because the people who were susceptible to the disease likely caught it and passed away. These were the people who were not considered "fit" for the environment and the disease.
Human evolution and natural selection work with each other to evolve humanity and our susceptibility to disease. Unfortunately, it is beyond likely that new diseases will constantly arise and may harm humans. However, as we continue to evolve, we are much less likely to catch previous diseases.
Steve is dead. Steves heart has stopped beating probably because his internal organs were damaged leading to low supply of blood. If the heart is not beating and he is not breathing it means he is dead.
The answer is D- the bacterium cannot reproduce
