The statement that accurately describes dark matter is that It is invisible and It does not emit electromagnetic radiation.
<h3>What is dark matter?</h3>
Dark matter is defined as the particles that makes up most of the mass of galaxies and galaxy clusters. They are also responsible for the way galaxies are organized on grand scales.
The features or characteristics of dark matter is that they are invisible and they do not emit electromagnetic radiation.
Learn more about electromagnetic radiation here:
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Answer:
NH4+ ammonium ion hydroxide ion
SO32- sulfite ion perchlorate ion
NO3- nitrate ion chlorate ion
NO2- nitrite ion chlorite ion
Answer:
Friction is "a force which opposes relative motion" while kinetic energy is the "energy an object has associated with its motion." Frictional work will reduce an object's kinetic energy if it opposes the current speed
Explanation:
The correct option is
<span>D. Observation....</span>