July is the warmest summer it has been proven by me and my fellow class mates.
Answer:
the answer should be b ot ccc
Answer: Because Isabel, where she lives, is salt water which contains salt.
Explanation:
The mass number is the sum of the number of protons and number of neutrons the atom has.
So, we can write the equation as:
x + 20 = 40
x = 20 neutrons.
