A common cause of iron deficiency anemia in adult hood is
blood loss and lack of iron in the body. Blood loss is usually the cause
because of bleeding in the GI tract, intestinal bleeding and chronic occult
bleeding. Lack of iron in the body is also a cause because a body is in need of
iron and if it does not exceed the required iron in the body, it may result to
iron deficiency.
Answer:
distruptions of temperature, precipitation and winds are caused by patterns that shift back and forth irreguraly every 2 - 7 years
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Even a country in which the birthrate and death rate are equal can experience population growth if it also has immigration.
- In evolutionary time, migration will often quickly converge gene frequencies among populations. Migration is a powerful mechanism for balancing the gene frequencies of subpopulations in a species in the absence of selection. Gene frequencies will eventually equalize if the migration rate is larger than zero.
- Migration refers to the movement of people, groups, or populations. Migration facilitates gene flow, or the transfer of genes from one population to another, in terms of genetics. Migration—or, to be more precise, gene flow—alone will quickly bring the gene frequencies of the two populations together if they initially had distinct gene frequencies and if selection is not at work.
Therefore, immigration is the correct answer.
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Answer:
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Explanation:
the answer is a,
Maintaining a stable internal environment
