The corn plant, as most of the plants, is included into the water, carbon, and nitrogen cycles, and that is due to their need for these three elements for their functioning and survival.
The water cycle can be seen in the way that the corn plant takes water from the soil by using its roots, uses the water for its growth and distribution of nutrients, and then releases it into the atmosphere through the pores in its leaves.
The carbon is one of the primary nutrients for the corn plant. The carbon is taken from the atmosphere in the form of CO2, and once used by the plant, parts of it are released through the root system into the soil.
The nitrogen cycle is in the way that the corn plant takes nitrates (NO2 AND NO3) from the soil, uses them as a food source, and then releases N2 into the atmosphere through the pores of its leaves.
Don't quite follow this one but it looks like ...
m-2.j=7x
m-3.j=3x+20
as a pair of simultaneous equations ???
I think B is the most accurate answer because knowing the daily weather forecast can help you pick a reasonable outfit for a cold or hot day
