The atmosphere is important because it contains ozone layers that absorb ultraviolet radiation UV coming from the sun, by thus it is protecting human beings and most living species from negative ultraviolet radiation and thanks to that many species live on Earth. Besides, that atmosphere keeps Earth warm thanks to greenhouse it produces and lowers the temperature leaps between day and night.
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.
The correct answer is Systematic observation
Systematic observation is a method used to understand how a particular activity or task works. The researcher observes the steps of a process, the tools used, the difficulties that appear, the conversations and results of the work.
Systematic Observation is guided by a defined objective, something you want to know about that activity. The observation is made repeatedly until there is sufficient evidence to state this.
Systematic Observation can be used to do Behavioral Mapping, Task Analysis or Activity Analysis.
Gave African-American or Black men the right to vote. 15th amendment
ended slavery in the United States. 13th amendment.
gave African-Americans or Blacks United States citizenship. 14th amendment
Reconstruction period where Congress took responsibility
for bringing the South back into the Union. Congressional reconstruction.
Answer:
is there a picture about tthe question
