The atomic number is the ___. • atomic mass
• number of neutrons
• protons plus the neutrons
• number of protons

How did alexander fleming’s research solve a societal problem? he developed ways to treat inherited diseases. he advocated for regular hand washing to kill germs. he discovered a new type of medicine that could treat infections. he discovered the cause of mad cow disease, an emerging disease.

The polio virus can cause skeletal muscle paralysis by destroying neuron cell bodies. what area of the spinal cord is destroyed

Why do mountaineers become breathless as they reach high altitudes