Input: Answer this question:
Which kind of rock is produced by deposition and cementation?
OPTIONS:
- marble, a metamorphic rock
- sandstone, a sedimentary rock
- granite, an intrusive igneous rock
- pumice, an extrusive igneous rock
Answer: sandstone, a sedimentary rock

*Question*: A geologist found fossils of horse bones in different rock layers of a canyon. The fossils in the lower levels show shorter bones than those in the upper-level fossils. Which conclusion is based on the geologist's observations? OPTIONS:
- Horse's reproduce using two parents.
- Horse's became larger over time.
- Smaller Horse's went extinct, and then larger Horse's formed.
- Smaller Horse's are better suited to the environment than larger Horse's.
*Answer*: Horse's became larger over time.

question:
The gravitational force between two objects depends on the distance between the objects and each object's
OPTIONS:
- mass
- volume
- pressure
- temperature

answer:
mass

[Q]: Many common hand tools create a mechanical advantage by using the basic principles found in simple machines. For example, a screwdriver uses the principles of the wheel and axle. In order to increase gripping force, pliers use the principle demonstrated in the
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OPTIONS:
- pulley.
- lever.
- wedge.
- screw.
****
[A]: lever.

question below:
One 7.0 kg bowling ball is lifted to a storage shelf 1.0 m above the floor. A second 7.0 kg ball is lifted to a storage shelf 2.0 m above the floor. Which of the following best explains why the measured force of gravity on each ball is nearly identical?
OPTIONS:
- The final potential energy of each ball increased.
- The amount of work required to lift each ball is identical.
- The distance of each ball from Earth's center of mass is almost identical.
- The gravitational force of each ball on the other cancels out the force of Earth's gravity.
answer below:
The distance of each ball from Earth's center of mass is almost identical.

Some businesses offer customers the option to pay for merchandise using their fingerprints as identification. Which of the following would most benefit customers that use this new technology?
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OPTIONS:
- cost of product is reduced
- protection of private information
- ability to track customer preferences
- funds would be credited immediately
protection of private information