Answer:
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Both are hard structures that reduce erosion causes by waves.
The first one is atoms cause they are all the same type of particles. The blue one is the molecules that is not compound cause they aren't connected to each other. The other two are compound cause two atoms of two different elements are bonded together.
Forensic scientists who study possible forgeries and questioned documents are often called forensic or legal linguists.
Forensic linguistics is a branch of linguistics that deals with such illegal kinds of documents so as to solve a certain crime.
B Water
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