Which statement below is true? * O The atomic mass is equal to the number of protons plus the electrons
O The atomic number is always equal to the number of neutrons.
The atomic number is always equal to the number of protons.
O The atomic number is equal to the number of protons plus neutrons.

Q: a pair of homologous chromosomesa) always has the same genes and the same allows b)always has the same genes c)always has the same alleles d)never has the same genes

Why should the united state be concerned about air pollution in china?

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.