What diseases are caused by microbes found in untreated surface water

Which type of nerve creates a 'mental map" of the relative positioning of the body at any given point in time?

Which of these is a sexual stereotype? a) on average, males are taller than females. b) people over the age of 60 are not interested in sex. c) male hormone levels differ from those of females. d) there are more male representatives than female representatives in congress.

Cages or wells required if longer a maximum unbroken length of 30 ft