Relative to the length of time life has been on Earth, have modern humans appeared recently or in the distant past? pLeAsE HeLp Me...

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?

What is the following best defines climate?

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays