High in the atmosphere, air pressure decreases. ... A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. As the air rises, the water vapor within it condenses, forming clouds and often precipitation.
The statement "The American Psychological Association is the only organization that can approve psychological research studies." is false.
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Be careful of the terms you use.
Chemicals with the same chemical composition but different structures are called isomers.
The specific example you gave of diamond and graphite suggests that you're looking for different forms of elements that have different physical structures. Those are called allotropes.