The symbol ca-40 denotes that

a. a calcium atom contains 40 protons
b. a calcium atom contains 40 electrons
c. a calcium atom contains 40 neutrons
d. a calcium atom has a mass number of 40

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.