If you have ever noticed a sharp odor in the air after a thunderstorm, you might be smelling ozone. Ozone can be formed from oxygen gas when lightning passes through the air. Which statement is true about ozone?
A. Ozone helps human health no matter where it occurs.
-
B. Ozone is a harmful pollutant no matter where it occurs.
C. Ozone high in the atmosphere is a pollutant, but near Earth's surface, it provides protection from harmful rays.
D. Ozone high in the atmosphere protects Earth's surface from harmful rays, but near Earth's surface, it is a pollutant,

i think it is true since you can test the answer and can use observations to complete it.

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

the answer is a for sure mark brainliest i had got this right on usatestprep