2

Charles Darwin called the castings of this humble creature as the living soil. It will be a great and significant impact for the betterment of our environment if all the do-nothing people in the world raise the crawlers.

25

Nuclear power stations are extremely dangerous even though they are very effective in energy production.

1

The lipoproteins are named according to their degree of density. Those containing the most triglycerides and the least protein are less dense.