Which of these cities is timbuktu?
a
b
c
d

a is at the tip of the nile river in egypt right next to the red sea
b is to the right of the red sea in the arabian peninsula
c is above the ghana in the sahara sudan
d is in mali right above the nile river

i'm not sure how to add pictures

All of the following statements about the biosphere are true except: a. light and heat from the sun do not affect the biosphere. b. the biosphere gets resources from earth's crust, hydrosphere and atmosphere. c. like "biology", the name for the biosphere comes from the greek word for life. d. the biosphere includes all living organisms on earth's surface.

The process by which liquid water changes into water vapour is called what ?

Where the main factor that enabled the growth of cities and civilizations was the existence of