Deep-ocean lantern fish have special organs that use chemical energy to produce light. however, the light can only travel a certain distance through the water before it is no longer visible. how does this phenomenon validate the law of conservation of energy?
the fish is a closed system, so energy is allowed to exit the system.
the law of conservation of energy applies to biological, not physical, systems.
the light energy travels through the water until it is reflected or absorbed.
the light is not carried by matter and contains no energy.

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.