Students are comparing the parts of a cell to the parts of a city. which of the following would provide the best comparison to the nucleus of a cell? A- Power plant - provides energy needed by all parts of the city
B - City Hall - directs necessary activities throughout the city
C - Waste management - collects and removes waste
D - Border patrol - regulates what enters and leaves the city

B

Explanation:

the nucleus function is to control the cell

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%

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.