A recent fossil discovery in Idaho included a jaw with a complete set of teeth. Each tooth in the jaw was sharp and the jaw bones indicate powerful muscles were once attached. This extinct animal was most likely a/n. (7.12.B)

Ricardo notices that when he plays soccer in the rain, his ball does not seem to go as far after a kick. what is the best scientific question that ricardo could ask about this observation? is soccer better played in the rain or sun? how does rain affect the distance a soccer ball can travel? how does rain affect the speed of a soccer ball? is soccer affected by the rain?

The cluster of developing cells from conception until birth is called an

About __ of the mass of the cell is water