I'm pretty sure it would be arrive instead of arrived.
Hope this helps you :)
Answer:
I am taking World Geo right now....we just studied South America. There are several factors as to why the population is concentrated along the coast. For starters the rainforests are not good for farming...there is no nutrients in the soil to sustain agriculture ( all of the nutrients are in the native vegetation) Another reason why people live along the coast is because major cities are along there. People migrate to the cities to look for work because the poor have no farmland and they need jobs to make a living. Alot of the good farmland is still held in large estates by the rich, which was passed down from generation to generation from when South America was being colonized by the Spanish and the Portugese.
Explanation:
Answer:
physical processes
chemical methods
physicochemical processes
biological methods
and several combinations thereof to fractionate the lignocellulose into its components.
Explanation:
Pretreatment involves the use of physical processes (e.g., size reduction, steaming/boiling, ultrasonication, and popping), chemical methods (e.g., acids, bases, salts, and solvents), physicochemical processes (e.g., liquid hot water and ammonium fibre explosion or AFEX), biological methods (e.g., white-rot/brown-rot fungi and bacteria), and several combinations thereof to fractionate the lignocellulose into its components.
Trees help purify our air. When the air is to contaminated trees take in all that contamination so we can breathe better.
