Which statements describe dark matter? check all that apply. it is invisible. it is the same as dark energy. it is well understood by scientists. it does not emit electromagnetic radiation. it can be observed by shifts in red and blue light.

Dark matter is invisible and does not emit electromagnetic radiation. Dark matter is part of a theory that hypothesis the existence of a counterpart to the particles we know in physics, in order to balance the universe that otherwise would be largely unbalanced right now. However, the theory right now is not yet proven.

One of the most common methods to date volcanic rocks uses potassium (radioactive parent) and argon (stable daughter). Potassium is an element found in many minerals and rocks, and it normally has an atomic mass of 39.

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