When a cold front or a warm front stays in place for several days without invading another front, it is called a

What is a cordon and where is it found

Look at the photo of the leaf. which term best describes this leaf?

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."