a teacher slowly stirs 40 grams(g)of table salt (NaCl)into a 100 milliliter(mL)beaker of water(H2O).The beaker is heated on a hot plate until it boils.

i would have a lunch. it's one big package of food, making it one food. : p

chert is a sedimentary rock composed of microcrystalline or cryptocrystalline silica. with this little bit of information, you can come to the conclusion that your answer is c.  

explanation:

not always but somethings can be reproduced in a laboratory.