What is one major purpose for an animal to produce unusual sounds, display bright
colors, and release distinctive odors?
migration
courtship
Hibernation
sleeping

How would you reduce the volume of gas

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?

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?