Because the current extinction rate is unusually high
Answer:
See explanation
Explanation:
Biphenyl is formed by the reaction of two phenyl radicals. It is a major impurity ( undesired product) that is formed when some amount of phenyl bromide (bromobenzene) doesn't react solid magnesium in the formation of the Gignard reagent. In other words, it is formed when there is a coupling reaction between Grignard reagent (Grignard reagent acts as a strong nucleophile) and bromobenzene
Biphenyl is usually produces when the concentration of bromobenzene is high and when there is increase in temperature during reaction. To minimize the amount of biphenyl, it is best to add the bromobenzene solution slowly so that the reaction boils gently, since the reaction is favorable at low temperatures.
Answer:
Reasons for Dictators
Explanation: The depression in Europe have rise to the dictators in Spain, Italy, and Germany.
According to Erikson's theory, children gain the ability to trust when the ego matures. Maturation of the ego occurs through successful resolution of social crises.
The base level of Maslow's hierarchy of needs pyramid includes
- A. physiological health
- D. safety and security.
<h3>What is Maslow's Hierarchy of Needs?</h3>
This refers to the different levels of human needs from the base or ID form to the highest form which humans aspire to attain.
Hence, we can see that based on the five hierarchies that are given by Maslow, at the base level in the given answer choices, options A and D are correct because humans want to be safe and loved.
Read more about Maslow's hierarchy of needs here:
brainly.com/question/19040822
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