Ostriches have wings similar in form to those of their ancestors, but that do not allow the birds to fly.

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?

How do living things obtain phosphorus

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million