COMPLETE SOLUTION
Which of these is the best explanation of how a smooth round stone became
smooth?
A. continuous freezing and thawing
B. volcanic action
C. it fell off the side of a cliff
D. it was in a stream for a long time
D. it was in a stream for a long time
When a lobster grows a claw to replace one that was lost, the process is called
A. restoration
B. retraction
C. regeneration
D. reproduction
C. regeneration
Any astronomical body that revolves around a larger body is called
A. a nova
B. a comet
C. a satellite
D. an astroid
E. a meteoroid
C. a satellite
In chemistry, to be classified as an organic substance must contain
A. sugar molecules
B. sodium atoms
C. carbon atoms
D. water molecules
C. carbon atoms
According to their locations on the Periodic Table, argon (Ar) and neon (Ne) are
A. ionic
B. radioactive
C. liquid metals
D. noble gases
D. noble gases
To test the effectiveness of plant fertilizer, groups of plants are grown with
different types of fertilizer. A control group of plants would
A. not be given any fertilizer
B. be grown with a mixture of all fertilizers