2M - experiment: procedure  to support, refute, or validate a hypothesis, providing insight into cause-and-effect, always rely on logical analysis.

3M -  "insect" comes from the Latin  insectum, \meaning "with a notched or divided body", or literally "cut into" (3 sections)

4M - how the world and universe around us works:
Chemistry, astronomy, Earth science, physics, and biology

5M - social behavior and norms:
knowledge, beliefs, arts, laws, customs, capabilities and habits

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2T - SERPENTS OR SNAKES: The primary difference may be in the usage: A serpent would be used to describe a venomous snake in literature

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3M - sidereal is relative to stars, used for time or astrology
outer space is beyond Earth between celestial bodies.
 

4M - nature: in the broadest sense,
is the natural, physical, material world or universe. ​

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5M - 71% of the surface of the Earth
five: Pacific/Atlantic/Indian/Southern/Arctic