Plz help and hurry!!!

step-by-step explanation:

one of the most important purposes of surface treatment is to alter surface properties according to the requirement of specific applications. for example, hydrophobic coating has been utilized on windshield and eyeglasses. gold atom monolayer on substrate has become a popular surface bioconjugation strategy.  

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}

i would say b) is your answer

sorry if im wrong

step-by-step explanation:

you could deduce the conclusion directly using the facts pertaining to the specific situation.

hope this .