Answer:
Neutral ions
Explanation:
Because they have a neutral charge They can only produce neutrally.
Alveoli. I don't know what a nephron is but neurons and synapses are in the brain.
D but I’m not to sure about it
Sodium, Salt, Gold, Platium
Answer:
A. Isotope
Explanation:
For example you have Carbon 12 with 6 protons and 6 neutrons and Carbon 14 with 6 protons and 8 neutrons.