A couple is worried about having a child with a genetic disorder so they go to a genetic counselor. The counselor takes a sample of cells from their mouth to determine if there is a possibility of having a genetic disorder. Explain why they the sample from the mouth instead of simply looking at sperm or egg cells.

Answer :

they took a sample from the month so they can seeexamine a person's genes, usually in order to estimate their risk of a particular disease, determine the exact cause of cell changes, or detect any hereditary diseases.  

Explanation:

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1.At any one instant, the Earth's atmosphere contains 37.5 million-billion gallons of water vapor – enough to cover the entire surface of the planet with 1 inch of rain if condensed.

2.
Animals contribute water mainly through breathing, perspiration and urination. When animals breathe, their warm lungs fill with air. Inside the lungs, some of that air condenses into water vapor.

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