What are 3 psychological , 3 social and 3 economic effects of :
alcohol,
prescription drugs,
Non-prescription drugs
Illegal drugs
Steroids
Diet pills
Hormonal injections

Viruses are different from bacteria in that they can remain dormant on non-living surfaces they can be found just about anywhere they can infect just about every form of life

Apart of an ecosystem that can restrict the growth of a population is referred to as

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?