Answer:
When the death rate is higher than the birth rate, the population decreases. It increases when the opposite happens.
Explanation:
If you are in the zone, you are happy or excited because you are doing something very skilfully and easily.
Answer:
The correct answer is because they have same number of protons but different number of neutrons.
Explanation:
Isotopes are atoms of the same element but differ only in the number of neutrons in the nucleus, i.e. they have same atomic number but different mass number.
Mass number is affected as they have different number of neutrons, thus effecting their physical properties.
The number of electrons and protons are same, i.e. their atomic number is same and thus their chemical properties are same as chemical properties are determined by the atom’s electronic configuration and that relates to number of protons.
Answer:
the smallest particle of a chemical element that can exist.
Explanation:
