The fact that the strength of gravity decreases with distance means the force of gravity exerted by one object on another (e.g., the Earth and Moon) is greater on the near side than the far side. This effect is commonly referred to as a
A) tidal force
B) differential force
C) distortive force
D) tractive force
Question 2
Microfossils found in northwestern Australia in 2011 appears to have used compounds based on which element for metabolism?
A) sulfur
B) oxygen
C) nitrogen
D) carbon
