What Does This Photograph,which Is Representative of Most of Mercury,indicate

question 49

Multiple Choice

What does this photograph,which is representative of most of Mercury,indicate about the planet?

• A)the surface is covered by impact craters
• B)the planet does not have tectonic or volcanic activity
• C)the planet lacks wind or water
• D)all of these

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Definitions:

Spontaneously Aborted

A natural end of a pregnancy before it reaches full term without medical or surgical intervention.

Motility

Self-propulsion.

Sperm

The male reproductive cells that are responsible for fertilizing an egg during reproduction.

Deoxyribonucleic Acid (DNA)

Genetic material that takes the form of a double helix made up of phosphates, sugars, and bases.