L-dopa is effective against Parkinson's, but its enantiomer D-dopa is not. An enantiomers drug may not be equally effective. The enantiomer, in chemistry, is one of two stereoisomers that are mirror images of each other that are non-superposable, much as one's left and right hands are the same except for being reversed along one axis. It is also known as an optical isomer.
Answer:
nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn no
Explanation:
A psychology study on attachment concludes that children who are not looked after by their parents need to have an opportunity to form an attachment with someone else.
<h3>What is an attachment?</h3>
An attachment is essentially an emotional bond between tone person and another person.
It is a connection that helps to ensure closeness and feeling more secure when people are with another.
In conclusion, the psychological research found that children who are not looked after by their parents need to have an opportunity to form an attachment with someone else.
Read more about attachment
<em>brainly.com/question/978078</em>
<span>James watt designed experiments in horsepower to: </span>quantify the energy generated by a horse in mines.
James watt created his experiements in 1700s. During that time , the main method of transportation is still carriage that run by horses. So horsepower is a renowned measurement in determining energy
Answer:
91%
Explanation:
As per the given pie chart, Non-Renewable sources include Coal, Nuclear power, Natural gas, and Petroleum.
Percentage of Coal = 52%
Percentage of Nuclear power = 16%
Percentage of natural gas = 20%
Percentage of Petroleum = 3%
∵ Total percentage of non-renewable sources of energy = Coal + nuclear power + natural gas + petroleum
= 52% + 16% + 20% + 3%
= 91%
While the other 9% is renewable energy including 7% Hydropower and 2% of geothermal, wind, solar energy, etc.
Thus, 91 % is the combined percentage of US energy produced by all of the nonrenewable sources.
