Answer:
Harmful mutations may cause genetic disorders or cancer. A genetic disorder is a disease caused by a mutation in one or a few genes. A human example is cystic fibrosis. A mutation in a single gene causes the body to produce thick, sticky mucus that clogs the lungs and blocks ducts in digestive organs.
Mutations arise spontaneously at low frequency owing to the chemical instability of purine and pyrimidine bases and to errors during DNA replication. Natural exposure of an organism to certain environmental factors, such as ultraviolet light and chemical carcinogens (e.g., aflatoxin B1), also can cause mutations.
only a small percentage of mutations cause genetic disorders—most have no impact on health or development. For example, some mutations alter a gene's DNA sequence but do not change the function of the protein made by the gene.
Because it will kill them because of a chemical found in chocolate
Answer:
First level
Explanation:
The physical activity pyramid is a visual representation demonstrating how to increase physical activity until it becomes a part of daily routine.
Lifestyle activities are the first step of the physical activity pyramid.
Lifestyle activities are moderate physical activities that are performed daily. The examples for moderate physical activities are housework, yardwork, non-vigorous sports, taking the stairs instead of the elevator.
Answer:
please kindly translate to English language.
Answer:
Like children, adults resist long separation from their attachment figures (e. g., long-term romantic partner). Those who do endure separation for a long time often experience worse health and well-being.
Explanation:
