<span>study island all of these</span>
The similarities between the climate regions of this wast places can be seen in the climate of all of Canada and the Patagonia, Tierra del Fuego and Andean regions of South America, where there is snow fall, cold and harsh conditions, glaciers, summers that are short and not warm. The differences can be seen in the other regions of South America where there's climate regions that are lacking in Canada, there's tropical rain forests, semi dry plateaus, desert...
The more cropping you do without switching crops depletes the nutrients needed for the certain crop you are growing, Ways to combat it are rotating the crops annually (pretty sure burning the crops every once in a while as well)
The answer is; cannot assimilate nitrogen
Plants require nitrate for growth but cannot absorb and assimilate nitrogen from the atmosphere in its N2 of NO2 form. Therefore they require the help of nitrifying bacteria that are capable of fixing nitrogen in the soil in the form of nitrates that can be absorbed by plants. Leguminous plants have a symbiotic relationship with these bacteria that reside in the nodes –root nodules- of the plant.
