Which organisms contain chloroplasts to help with food production?

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist

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

What are the characteristics of subsystem