Which structure does a eukaryotic cell have that a prokaryotic cell does not have?

Number and variety of living organisms includes genetic, species, and ecological types

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

The human body needs energy in order to carry out life processes such as breathing. where does the body get this energy? a. from eating food b. from learning about new things c. from lying in the sun d. from sleeping