Locard's exchange principle implies all of the following except Soil samples can be carried from the yard into your home
Blood splatter can be used to identify blood type
O Cat hair can be transferred to your pants
O Fibers can be transferred from one person to another

Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?