Francis is conducting an experiment to determine whether the acidity of ocean water affects the growth of ocean plants. he has 10 aquariums, each containing the same species of ocean plant. one has a ph of 8.2, the approximate ph of the ocean. the others vary in acidity from 0 to 14. francis measures the growth of each plant after one month. each aquarium is kept at the same temperature and receives the same amount of sunlight. what is the variable being tested in this experiment? acidity or ph species of plant temperature amount of sunlight

Recently, crops of vegetables such as lettuce and green onions have been contaminated, while they are still on the farm, with bacteria that cause food poisoning. how will science influence the way the government responds to prevent an increase in food-borne diseases? because science has shown that lettuce and green onions are not nutritionally valuable, the government may pass laws that ban the sale of lettuce and green onions. because science has shown that there is no way to prevent bacterial contamination, the government may pass laws that punish businesses that buy lettuce and green onions. because science has shown that the washing of hands prevent the spread of infectious diseases among people, the government may pass laws that require hand washing by everyone who handles food. because science has shown there are ways to find the source of the contamination, the government may pass laws that require farm practices that reduce the contamination of lettuce and green onions.