All of the above thank u very much
Answer:
I think it has declined b/c if you look at the smoking standards. in 2005 there was 20.5 percent of population that smoked . there was a decline 2020 it dropped to 14 percent of the population smoked
Explanation:
It can put them in a horrible head space due to online school and not being able to socialize as much
Answer:
Their shelf life really depends on whether they've been cut. Store cut brownie squares in an airtight container at room temperature; they're best eaten within 1 to 2 days. A whole pan's worth, uncut and well wrapped in plastic, will keep at room temperature for up to 4 days, or in the freezer up to 3 months.
Explanation:
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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.
