Rachel notices that many objects have rusted. Rusting is a chemical change that some metal and steel objects undergo when they are exposed to oxygen. Which option best describes a chemical change?
A. a change from solar energy to chemical energy
B. a change in matter that produces one or more new substances
C. a change from a liquid state to a gas state
D. a change in form or appearance of matter

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.