Select the correct answer.
why did the nuclei of the original shoemaker-levy 9 comet break into many pieces?
a.
because of the gravitational pull of the sun
b.
because of the gravitational pull of saturn
c.
because of the gravitational pull of jupiter
d.
because of the gravitational pull of neptune

1) a

2)c

3)a

4)c

5)b

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friedrich meischer discovered it in white blood cell

wild parsnip is a perennial plant which reproduces rapidly in areas which have no sign of agricultural activity such roadside or at no tillage open areas. it's considered invasive because it can inhibit the growth of another plant  and its reproduction is fast. there are several harmful effects of this invasive plant although its taproot is edible since it is a member of the carrot family. wild parsnips can cause skin blistering when in contact because of the chemicals it contains, second it inhibits the growth of other plants, it will restrict the growth of animals when eaten and lastly, it drives away natural pollinators like bees.