Ques:Fossils found at the lowest layer of rock would be the oldest, as these would have been buried for the longest time, whereas fossils found closer to the surface would be buried more recently and therefore be younger.  A fossil in the highest layer of rock would be younger or older than one lower down?

Ans:younger
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Ques:During inhalation, because the chest volume is larger, the air pressure inside the lungs is lower than the air pressure outside.  A person takes a deep breath and wants to know if the air outside their lungs is stronger than the air outside. The air in their chest, when they have a large chest, will be, compared to outside the body, higher or lower?

Ans:lower
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Ques:Plug-in hybrids run for a longer time on electricity and so are less polluting than regular hybrids.  Do gas engine cars pollute more or less than electric engine cars more or less?

Ans:more
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Ques:Greater use of oil and other fossil fuels causes more pollution.  The new invention removed oil from the ocean, which caused less or more pollution?

Ans:
less
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