Which is an example of heat being transferred by conduction a) A furnace heating the air in a school
b) an ice cube melting in a persons hand
c) A pot of water on the stove boiling
d) The sun heating the water in a swimming pool

Which macromolecules are polymers made of nucleotides (a) fatty acids (b) nucleic acids (c) carboxylic acids (d) amino acides

Which law represents a balanced chemical equation?

Suppose you use three different scale to weigh a bag of oranges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of oranges is 2.153 lb. which of the following best decribes these results?