Often only small amounts of dna are found at a crime scene. which technique uses an enzyme to replicate dna regions from a small sample of dna for use in dna fingerprinting? vntrs (variable tandem repeats) pcr (polymerase chain reaction) analysis strs (short tandem repeats) mtdna (mitochondrial dna) analysis

Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation

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.

Communication and transportation have improved as a result of scientific advancements. select the best answer from the choices provided of mark this and return save and exit next