Answer:
The Quantum Model of the Atom 1927
Explanation:
It is the most accurate model of the atom but I don't know about the easiest to visualise. Soz :(
Parkinson's disease
<span>Parkinson's disease results from deterioration of brain's nerve cells</span>
Answer:
The answer is D.) Mercury
During nitrogen fixation, bacteria breaks nitrogen gasses down into a usable form for plants.