Which epoch is also called the Ice Ages?
a. Permian
b. Holocene
c. Pleistocene
d. Cretaceous
c
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Amy, Brad, and Cate are walking (or running) along a straight line as shown below
The possibility of life in a Europan ocean probably rests on the question of
A) whether there is enough energy in a useful form to support biology B) whether there is enough water present C) whether there is enough raw materials to build biological molecules D) the level of salinity present
The moon pulls on the Earth with one-sixth of the force of the Earth exerts on the moon
Indicate whether the statement is true or false
Two forces act on a 4.00-kg object in a manner that the object has an acceleration 3.00 m/s2 in a direction 20.0° north of east. The first force is 15.00 N in a direction 10.0° west of north. What is the second force?
A) 14.6 N in a direction 28.1° south of east B) 12.9 N in a direction 28.1° south of east C) 16.2 N in a direction 30.2° south of east D) 18.8 N in a direction 41.1° south of east E) 17.5 N in a direction 37.5° south of east