Question- Which of these is a primary source about the discovery of the New World?
Answer- The answer would be, A journal written by Christopher Columbus on one of his voyages!
Further Explanation On Answer- This is because a primary source, is an artifact, book, article, etc. that was created at the time of a study or case. In this problem it was a journal that was written by Christopher Columbus, in his time! All of the other information was written after, and was information that had been researched!
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Answer:
The ability is called discrimination.
Explanation:
This term is within Operant Conditioning, in which the subject is able to differentiate between various stimulus, focusing mainly on the conditioned ones and disregarding any <em>similar</em> ones which do not signal an unconditioned stimulus.
If dichloromethane is swapped out and ethyl acetate is used in its place, the extracts then obtained would be highly anti-radical and would be more efficient than dichloromethane.
Since "like dissolves like," ethyl acetate is a polar molecule that works well as a solvent to extract the polar caffeine molecules from coffee beans. The ethyl acetate molecules bind to the caffeine molecules, which then move through the bean cells' cell membranes. After all, the ethanol:water (1:1) solvent combination has been demonstrated to be the best for recovering catechins and delivering extracts with the highest antiradical activity.
Dichloromethane is a volatile colourless liquid used as an organic solvent in many industries. One of its main application is that it used to extract caffeine because of its highly effective solvent nature. Because DCM is a non-polar solvent and caffeine is readily soluble in DCM, it can easily be extracted without losing its aroma.
To know more about dichloromethane, refer to the following link:
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According to Freud, the hidden content of a dream is refered to as the latent content of a dream.
<h3>What is dreaming?</h3>
According to Freud, the manifest content of a dream includes thoughts, images, and contents.
In Freud’s model of dreams, the hidden meaning of a dream is called the latent content. It is simply the hidden psychological meaning of the dream.
Learn more about Freud on:
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The dead animal carcass's and the human ashes and body/bones cause the river to be polluted. CAUSES BAD POLLUTION