The metamorphic rock marble will dissolve in the presence of a weak acid. which rock probably was changed into marble by the addition of heat and pressure?
a.) shale
b.) sandstone
c.) granite
d.) limestone

to which of the 6 crystals systems does a halite crystal (rock salt) belong?
a.) tetragonal
b.) orthorhombic
c.) monoclinic
d.) cubic

Hybrid instruments that play sounds that are part sampled and part synthesized are known as:

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?

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.