Same meaning?
When maximum concentrations are reached , there may be a delay of one or two days before toxic toxicity occurs .
If maximum concentrations are reached , there may be a delay of one or two days before toxic toxicity occurs .

Answer: yes

Same meaning?
He wears a red and blue baseball cap , and a green and yellow t-shirt .
He wears a green and yellow baseball cap and a red - blue T-shirt .

Answer: no

Same meaning?
The lowest temperature ever registered in Pokhara was on 4 May 2013 , while the highest temperature ever recorded was January 13 , 2012 .
The highest temperature ever detected in Pokhara was on 4 May 2013 , while the lowest temperature ever recorded was on 13 January 2012 .

Answer: no

Same meaning?
A closely related area is the examination of combinatorial Markov chains , especially on finite objects .
A closely related area is the study of combinatorial Markov chains , especially on finite objects .

Answer:
yes