Which are the major structures of the integumentary system? Select three options.

bones
hair
joints
muscles
nails
skin
tendons

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

Which of these is a provisioning service people get from the ocean

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