I'm pretty sure the answer is the third option.
If it's wrong, I'm sorry.
Good luck!
Answer: The stimulus would be someone running in the heat and the external response would be them sweating .
Answer: Protons and electrons are far apart with lots of empty space in between.
Explanation:
Atom is defined fundamental part of a matter. Atom is composed of three sub particles protons, electrons and neutrons.
In an atom, electrons are located in orbits around the nucleus. Nucleus of an atom is located at center of the atomic sphere where protons and neutrons are present. Hence, it will be correct to say that "protons and electrons are far apart with lots of empty space in between".
<span>True plankton are low in the food chain</span>
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Group 18 non reactive and non metallic
