Which of the following is not an example of a major hazard to human health? b. air pollutants c. earthquakes d. unsafe working conditions e. infertility

the correct answer is b

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

answer: zinc is the substance which has a volume of 1.38 .

density is defined as the mass of an object per unit volume.

it can be calculated by dividing mass of a substance by its volume i.e.

si unit of density is kg per cubic meter and cgs unit of the same is gram per cubic centimeter.

now from the given data volume can be calculated by the formula .

hence, the volume of aluminium will be = which comes out to be 1.703 .

similarly, volume of zinc, chromium, and nickel will be 1.378 , 0.869 , and 0.356 respectively.