Three Books (X, Y, and Z) Rest on a Table

question 63

Multiple Choice

Three books (X, Y, and Z) rest on a table. The weight of each book is indicated. The net force acting on book Y is:

• A) 4 N down
• B) 5 N up
• C) 9 N down
• D) zero
• E) none of these

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Definitions:

Allopatric Speciation

The formation of new species in populations that are geographically isolated from one another.

Environmental Factors

External influences from the surrounding environment that can affect the growth, development, and survival of organisms.

Parental Stock

The breeding animals or plants used in agriculture or aquaculture, from which offspring are produced for specific qualities or production purposes.

Sympatric Speciation

The process where new species evolve from a single ancestral species while inhabiting the same geographic region.