In the Plessy vs Ferguson case, the surpreme court ruled the "Separate but equal" law in which segregation was allowed but they had to have equal privileges. Example you could separate people in different train cars, but they had to both be comfy and Clean.
1)Averages could be done.
<span>2)Experiments or "works" could be repeated many times. </span>
<span>3)Limiting factors likely to introduce errors could be avoided.</span>
Hopelessness and Death VS. Hope and Life is different because when you're hopeless death will strike quicker but with hope you could live longer. I hope this helps.
The last sentence makes the most sense in this context because it is talking about dead and uncared for plants. The first and second sentences metion that the flowers are fresh,lush,well-watered, and nurtured, but the orginal sentence contradicts this.