Hello!
The phrase that best describes a meteoroid is "Small pieces of rock and dust in space"
Meteoroids are small bodies of the solar system. They are rocks between 100 μm -50 m in diameter that are smaller than comets and asteroids and bigger than cosmic dust. They commonly are fragments of comets and asteroids that had been separated from them by heavy impacts. When a meteoroid enters the atmosphere, it burns, and the glow that this burn produces is what we call "shooting stars". However, the correct definition is the mentioned above.
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Reduce the risk of waterborne disease
Answer: A. environmental influences
A development in terms of biology is a gradual process of changes that occurs in an organism until the organism attains maturity or adulthood. Development can be physiological and mental development. Environmental influences are influences of nature on development. Some of the environmental influences are nutrition, altitude, temperature and climate. For example sunny weather conditions in a region can induce dark complexion in the habitants.
Tongue, epiglottis and sublingual/parotid or submaxillary glands (Salivary glands). Hope this is what you were looking for :)
