Answer:
There are two types of errors: random and systematic. Random error occurs due to chance. ... Random error may be caused by slight fluctuations in an instrument, the environment, or the way a measurement is read, that do not cause the same error every time. In order to address random error, scientists utilized replication.
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The answer should be B because the central nervous system is the spinal cord and brain.
During early civilization, the main source of fresh water was from a river. Nowadays, we have reservoirs and lakes to get fresh water. <span />
Answer:
A monomer is a single unit of a substance (eg. Amino acid). A polymer is a chain of monomers (eg protein). An isomer is a molecule of an element with the same chemical formula but a different chemical structure (e.g sucrose and maltose)
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Explanation:
I would say A solar panel is used to power a house.
