Answer:
1 AU means 1 astronomical unit or the aproximate distance from the earth to the sun
1AU=149597870.7 kiometers
1 billion=1,000,000,000
600 billion=600,000,000,000
x times 1AU=600,000,000,000
x times 149597870.7=600,000,000,000
solve for x
divide both sides by 149597870.7
x=4010.75
so aprox 4011 AU's
Answer:
Such material, called detritus, consists of fragments of rocks and minerals. When the energy of the transporting current is not strong enough to carry these particles, the particles drop out in the process of sedimentation. This type of sedimentary deposition is referred to as clastic sedimentation.
C clouds
Clouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals
Answer: C
Explanation: It isn't impossible to pollute and it is a usable water source AKA wells