Answer:
sorry I didn't know...........................
I think the correct answer would be the first option. Global belts of low and high air pressure are caused by horizontal air currents. Air current travels horizontally in the direction from low pressure to a high pressure zone. So, it is the horizontal movement of air that causes air pressure.
A population pyramid tells us how many dependants there are. There are two groups of dependants, young dependants (aged below 15) and elderly.
Answer:
A proton is a subatomic particle, symbol. p. or. p + , with a positive electric charge of +1e elementary charge and a mass slightly less than that of a neutron.
Electric charge: +1 e; 1.602176634×10−19 C
Charge radius: 0.8414(19) fm
Mass: 1.67262192369(51)×10−27 kg; 938.272...
Electric polarizability: 1.20(6)×10−3 fm3
Explanation:
