In the last line of the passage, the author writes, "they think that a gigantic meteorite hit earth over 65 million years ago." this statement is intended to
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a. introduce a new idea
b. contradict an earlier statement
c. give an example
d. provide an explanation

there are plastid colour pigment organelle containing a verity of colours

              plastids contain of three organelles 1) chloroplast   (2)   chromoplast   (3)   lecoplast

            the verities of colours are present in chromoplast rather than green so, petals of sun flavour colour is due to chromoplast.

answer; both surfaces of the membrane are nonpermeable

ok yes, but what is the question? as soon as you ask the actual question i will answer it. : )

b) charles darwin i learned that last year!