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Is a person ,usually a sailor ,who navigates water-borne vessels or assists in their operation, maintenance, or service.
region of DNA typically found near the middle of a chromosome where two sister chromatids come in contact.
a biological process by which an animal physically develops after birth or hatching, involving a conspicuous and relatively abrupt change in the animal's form or structure through cell growth and differentiation.
an instrument used to measure how hot or cold something is- usually reported either in degrees C or F
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