Which condition causes ocean salinity to decrease?
a. low levels of evaportation
b. thawing of polar ice caps
c. ocean water flowing into rivers
d. low levels of precipitation

If an inclined plane is 5 m long and 2 m high, what is its mechanical advantage? a. 2.5 b. 3 c. 7 d. 10

Estimate the schwarzschild radius (in kilometers) for a mini-black hole formed when a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (assume that the your weight is 50 kg)

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?