Why could tropical rain forests be called the "medicine chest of the Earth?

Will camels hump ahrinks.give reason

What two factors does carrying capacity compare? population size and resource use population growth and resource availability resource use and time population size and time

In response to framton's dialogue about his health issues, mr. sappleton replies: "no? " said mr. sappleton, in a voice which only replaced a yawn at the last moment. then she suddenly brightened into alert not to what framton was saying. what does this statement reveal about how mrs. sappleton feels about framton? a) she finds him boring. b) she's happy he came by. c) she finds him annoying. d) she feels sorry for him