Christopher was looking at pictures of different mountain ranges in the United States. He was surprised to see that the Appalachian Mountains were smaller and more rounded that the Rocky Mountains. The Appalachian Mountains looked smaller and more rounded compared to the Rocky Mountains. Why would that be?

How does natural selection change thephenotypes within a population over time?

What goes in and out of a cell respiration?

Which of the following statements about polysaccharides are correct? choose all that apply.cellulose is a linear, unbranched polymer of glucose monomers.starch is typically more highly branched than glycogen.cellulose is a major component of both plant and animal cells.glycogen is a storage form of glucose in animal cells.glycogen is the most abundant organic compound on earth.starch and cellulose are found in plants.