Isotopes are variants of a particular chemical element which differ in neutron number, although all isotopes of a given element have the same number of protons in each atom. The term isotope is formed from the Greek roots isos and topos, meaning "the same place"; thus, the meaning behind the name is that different isotopes of a single element occupy the same position on the periodic table.
Answer: C
Explanation: It isn't impossible to pollute and it is a usable water source AKA wells
no, the scope on it blocks out natural light
The method of virus transmission which results in a greater spread of disease is through airborne transmission
Conjugation is when genetic material is transferred from one bacteria to another via direct contact. Neither of these options are completely correct, but the more correct one would be the first.