Questions

WASP's means White Anglo Saxon Protestants are the people who live in a society in America whose ancestors came from northern Europe, especially England.

Night and Day.

Night is what that always falls but never breaks

Day is what always breaks but never falls.

Thyroxin or Thyroxine is the thyroid hormone that regulates carbohydrate metabolism in the human body.

No improvement required. Sentence is idiomatically correct.

Coagulation is a chemical process that involves neutralization of charge. Coagulation during water treatment is designed to remove particles suspended in water.

The term 'degrees of newness' is associated with degree of design change. How much the design changes that much newness comes in it.

Allotropes are different structural modifications of an element, that is, each of two or more different physical forms in which an element can exist.

Carbon is capable of forming many allotropes due to its valency. Well-known forms of carbon include charcoal, diamond, graphite, buckminsterfullerene and graphene.

Hence, Ethylene is not an allotrope of Carbon.