A doctor uses an instrument(s) that emits light and allows the doctor to view the inside of a patient’s intestine. What is the doctor most likely using?

a telescope
a microscope
laser beams
fiber optics

Control of the body is accomplished by which of the following body systems? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems

What pattern of migration do whales follow?

Isolated volcanic peaks on the ocean floor are