Answer:
Sickle cell anemia is a genetic disease with severe symptoms, including pain and anemia. The disease is caused by a mutated version of the gene that helps make hemoglobin — a protein that carries oxygen in red blood cells. People with two copies of the sickle cell gene have the disease.
Explanation:
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Secondary succession happens more often because it occurs after some kind of distribution that still leaves the soil intact (mudslide,bulldozing,shoveling,or scraping off an area)
Answer:
d.
Explanation:
Pruning is the process by which unused connections between neurons are eliminated. This has been studied and scientists believe this process takes place in order to get rid of any damaged or degraded neurons, allowing specific areas of the brain to improve their networking ability. Which is why it is a big area of study in regards to child development.
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