Why is it important to take the temperatures of different locations to make the best weather prediction for the entire area?

In order to  make the correct judgement concerning the temperature of an area, different samples of the temperature readings have to be taken and analysed since different ecological factors affect the surface temperature. these factors include wind, shelter from sunlight and variation in vegetative cover. Therefore one reading can not correctly represent the temperature prediction of an entire area.  

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.