Throughout most of the 1800s, the most widely accepted atomic theories were based on research performed by an english chemist named john dalton. the main tenets of dalton's theory were: elements are made of tiny particles called atoms. atoms cannot be divided into smaller particles. all atoms of a given element are identical. the atoms in one element are different from the atoms in another element. a chemical reaction is a rearrangement of atoms. then, in 1897, while studying electric discharges in a cathode-ray tube, a british physicist named j. j. thomson discovered electrons. which tenet of dalton's atomic theory did thomson disprove? a. elements are made of tiny particles called atoms. b. atoms cannot be divided into smaller particles. c. the atoms in one element are different from the atoms in another element. d. all atoms of a given element are identical.

Areal dna molecule consists of thousands of these pairs of nucleotides. what is the pairing arrangement of the nitrogen bases

In which state was more than 100 billion tons of coal mined in 2005?

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.