Answer:
protection and a mask
Explanation:
that virus is deadly and especially in a high risk groups, and it attacks lungs and nose and throat
Your heart is very important. the reason your heart is important because the heart keeps blood that's full of oxygen circulating through your body. the heart is also needed for survival, without one you would be alive today. The heart also sends blood around the body. The blood provides the oxygen and nutrients which is needed.
A quantity that does not equal 0, a real nonzero number must be positive or negative and a complex nonzero can have real or imaginary parts
