Why do scientists use models? they negate the need for further experimentation.
they provide a visual guide for abstract concepts.
they account for all details of the real phenomenon.
they predict conditions of future events.

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?

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?

Explain the significance of meiosis in sexual reproduction