The air can be considered polluted once harmful or toxic substances are being released and introduced into the air and can bring many types of diseases or health problems to the living organisms in it. Some actions can be done in order to remedy air pollution and these include: government passing regulatory laws, testing for car emissions and carpooling so there will be less driving.
It would be Agility
Explanation: a number of factors can affect bone health like the amount of calcium in your diet
Least dense to most dense: gas, solid, liquid.
No, fish and snakes do not have ears
