I do not agree with the statement.
The "substance" can be a compound. It's "pure"
as long as there's nothing else in it but its name.
'Pure' water is 100% H₂O with nothing else in it.
'Pure' table salt is 100% NaCl with nothing else in it.
'Pure' carbon dioxide is 100% CO₂ with nothing else in it.
These example substances are all compounds, not elements.
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A) No, the equations presented above are the product of the derivation of position and velocity when the acceleration is constant.
The equations change to polynomial function of the second degree for the description of the acceleration when described as a function of time.
B) Yes, when the acceleration is zero it is concluded that the velocity is constant, therefore they could be used to describe the position as a function of the change in velocity.
Answer:

Explanation:
The Planck Eistein relation, states that the energy of a photon is proportional to its frequency:

h is the Plank constant.The frequency of a photon is defined as the speed of light over its wavelength:

Replacing (2) in (1):

Explanation:
All living organisms metabolize. That is the definition of life. So jr answer is no animal or organism that does not consume food.