How Many Fundamental Forces Are Known in Science at the Present

question 54

Multiple Choice

How many fundamental forces are known in science at the present time under normal conditions?

• A) four
• B) five
• C) three
• D) six

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Definitions:

Fetus

An unborn or unhatched offspring of a mammal, in particular, a human more than eight weeks after conception.

Thalidomide

A medication that caused birth defects when it was given to pregnant women during the 1950s and 1960s, notably used initially as a sedative and for morning sickness.

Pregnant Women

Refers to females who are in the state of carrying a developing embryo or fetus within the uterus.

Monozygotic Twins

Twins that are genetically identical because they were formed from a single fertilized egg that split into two, sharing 100% of their DNA.