Answer:
Air pressure is the weight of air molecules.
Explanation:
Air pressure can be described as the force generated by the weight of air on the surface of the Earth. The size and number of the air molecules determine the air pressure.
When the number of molecules in the air increases, it generates more force on the Earth's surface and we say that it is regarded as a rise in the atmospheric pressure. A mercury barometer is a device which is used to measure the air pressure.
Answer:
I am not going to straight out give you the answer, because I believe you can figure the answer out yourself. Ask yourself is the fossil living (or once living) or not living? If the fossil <em>is </em>living or once lived, that would make it biotic. If the fossil is not alive, that would make it abiotic.
<span>The polysaccharide found is chitin which is part of the exoskeleton of arthropods.</span>
