Need some fishing help got a couple questions…?

So im taking this test for work…and i need a little help with these questions….here we go..

#1 In fly fishing what is the difference between double taper and weight forward fly line?

#2 What is the main feature and benefit of the new lightweight fishing waders?

#3 what is the main benefits of the spectra type line that leads to it recent popularity?

#4 what are the benefits of fiberglass and graftif rods?

#5 what is the main advantage of a felt sole wader?

#6 What technology enable fish finders to work effectively?

#7 What are the benefits of color in fishing lures?

Thanks in advance

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