(a) What is the reason for different types of silk? (b) Why are eggs laid by female silk moths warmed?
(c) After how many days, caterpillars stop eating and start to spin cocoons?
(To be noted- a b and c are question not option it is subjective question)

the answer is trees if i'm not mistaken

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

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