A desert is a unique biome that receives less than ten inches of rain a year.  Deserts are very dry, but they are not always hot.  There are two kinds of deserts: hot deserts and cold deserts.  The hot desert is the kind of desert we are most familiar with.  They can be very hot.  [...]

Imagine that you are walking in the desert and you see an x-shaped track.  Do you know what animal makes an x-shaped track?  It is a road runner.  The road runner has two toes that point forward and two backward to make this unique track.  The road runner can be up to 18-24 inches long [...]