Khan Academy is great! Also, Alison (it's a website) has some free courses as well.
<span>Suffocation is a most leading reason of death in grain storage
bins. Grain handling industry is a high hazard industry where workers can be
exposed to numerous serious and life threatening hazards. These hazards
include: fires and explosions from grain dust accumulation, suffocation from
engulfment and entrapment in grain bins, falls from heights and crushing
injuries and amputations from grain handling equipment. </span>
Answer:
B. it expands and shrinks in the soil
Answer:
It depends entirely on an equation, certain equations are meant to confuse you with numerous answers so taht you have to narrow it down, some only have one or a few. It really depends on the type of problem
