Why viruses are thought to have evolved after cells instead of before.

Viruses did not evolve first, they found. Instead, viruses and bacteria both descended from an ancient cellular life form. ... Viruses carry only the essential genetic information they need to be able to slip inside a host cell and coax it into making new copies of the virus

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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.

they are known as evergreens