The correct option is B. 80% of the radioactive phosphorus used in the experiment entered the cell showing that DNA was the hereditary material.
Answer:
Yes, COVID-19 is spread through respiratory droplets, which typically travel about three to six feet and settle on surfaces, where they can live for a few hours up to several days, according to the World Health Organization. There is a risk of catching the disease by inhaling those particles, but there is a more significant risk of getting it by touching surfaces, such as desks, handrails, or doorknobs, where those droplets may have settled.
“The disease transmission goes from a cough or sneeze to a surface to your hand to your face, and that’s how people get infected,” said Paul Biddinger, director of the Emergency Preparedness Research, Evaluation, and Practice Program, Harvard T.H. Chan School of Public Health. “Good hand washing really matters. If people cough or sneeze into their elbow, that limits the spread of respiratory secretions.
Answer:
N20 is an element because it is on the periodic table and doesn't have anything else attached to it. NO would be a compound because it has oxygen attached to it.
Answer:
d. Natural selection.
Explanation:
i know it is def not b because that is inside the body lol and i dont think its a either, I could be wrong tho.
