The leaf because it is the major structure of photosynthesis in a plant.
Some reefs cannot survive in certain temperatures of water, and so they would die if the temperature is not correct.
<span>Anemia
is a condition that occurs in blood in which a person lacks enough healthy
blood cells or haemoglobin. The latter is the main part of the red blood cells
which binds with oxygen and transports it to the rest of the body. One of the
causes of anemia, as mentioned above, is fatigue. The condition can also be
associated with the deficiencies in vitamins and minerals (iron). </span>
Answer:
In heterozygotic individuals, the gene for sickle cell anemia is protective against malaria.
Explanation:
Through the same mechanism that the mutation associated with sickle cell anemia produces the disease (altered hemoglobin structure), having a single copy of the mutation (that is, being heterozygotic) provides protection against malaria. This is believed to be due to the altered structure causing difficulty for the malaria parasite when it attempts to enter red blood cells as part of its life cycle.
Today, there are medications to successfully treat malaria, but it still killed 627,000 people in 2020. This represents a significant evolutionary pressure for genes that would prevent serious malarial illnesses. As malaria was and still is common in African regions, the result was a higher prevalence of sickle cell anemia in those of African descent.
Answer:
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