The answer is The law of ''gravity'' helps explain why the density of air as the altitude above earth's surface increases.
Answer: I put DNA and i'm sure thats the answer
Explanation: DNA is found in the nucleus of every cell in your body. It contains genetic information, in the form of genes, which are passed on from one generation to the next. Your DNA determines all of your traits.
Joanna'a therapy is antibiotic therapy.
Antibiotic therapy is the therapeutic way to overcome an infection using one or more anti-infectious drugs, belonging to the class of antibiotics, and whose activity is exerted against the bacteria causing this infection. It could also be used to prevent superinfection (for example after bronchitis, cold, flu, viral infections or ear infections) or to reduce the risk of infection before surgery.