It will help them stay in better shape resulting in better health, being more physically active, and staying happier as a result.
Choices 'C' and 'D' are both correct.
(Except in 'C', changing the temperature from 1°C to 3°C is not usually
described as 'cooling', and it's not the water's 'mass' that changes. But
water does contract in volume during that change.)
Solar energy, wind energy, and hydroelectric energy are all renewable energy
the number of electrons that fill the outer shell determines the properties of elements
