Mammals do not undergo metamorphosis. true or false?

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Monomers are the building blocks of larger molecules, called polymers. for example, proteins are composed of chains of amino acids that are linked together. cellulose is a polymer that makes up plant cell walls. cellulose is made from a chain of c6h10o5 molecules. which monomers are most likely used to produce cellulose? why?

When a gasoline engine burns gasoline, what type of chemical reaction is occurring?