What substances do each of the letters represent? ОА Wis O2; X is H2O; Y is CO2; and Z is glucose.
B
W is H20; X is O2; Y is CO2; and Z is glucose.
OC
W is H20; X is O2; Y is glucose; and Z is CO2.
D
W is CO2; X is O2; Y is H20; and Z is glucose.

The idea that all living things are made up of cells is considered scientific law. this means the idea is an emerging scientific idea that has a logical explanation. has been tested with similar results at least twice. is supported by scientific consensus and a large amount of evidence. has been rejected only once by the scientific community