How do animals in the desert defend themselves from predators?

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 a dendrite and what does it do?

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic