Electron microscopes can reveal details

The carbon cycle is best defined as a process in which a. carbon changes from inorganic forms to organic forms and back b. carbon is changed into other elements such as oxygen or nitrogen c. carbon is continually created from the sun’s energy by plants d. carbon is consumed and regenerated from other elements such as oxygen and nitrogen

The smallest parts of these that retain their original properties are called

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.