On their way home from Earth, some aliens traveling in a group want to stop by Saturn. Saturn
is about 9 astronomical units from Earth. How
many kilometers is 9 astronomical units?
A. 1,350 km
B. 46,500,000 km
C. 1,350,000,000 km
O D. 135,000 km
SUBMIT

Why might surface mining be less risky for miners than underground mining? a. surface miners can become trapped in a collapsed mine. b. surface miners work in dusty, enclosed areas. c. surface miners work aboveground. d. surface miners use elevators to enter mines.

Christie's doctor recommends that she eat 40 grams of protein a day. she's already consumed 50% of her protein recommendation for the day. how many servings of the given snack should christie have to meet her daily protein recommendation?

What protects the lining of the stomach from acidic gastric juices?