Which of the following best describes the main function of the circulatory system?
A) to deliver nutrients and other essential materials to cells and remove
waste products
B) to break down the nutrients found in food so that they can be used by all
cells in the body
C) to produce the chemical signals that allow parts of the body to
communicate over long distances
D) to coordinate all other body systems so that they can function together to
maintain homeostasis

Acar company is testing seatbelts using crash test dummies. the company finds that when cars come to a sudden stop, the crash test dummies' bodies continue to move forward. the seat belt keeps the crash test dummies from hitting the back of the seat in front of them. why do the crash test dummies' bodies continue to move forward even though the car stopped? a. the friction opposing their bodies' movement keeps them in motion. b. the inertia of their bodies keeps them in motion. c. the forward acceleration of the car keeps them in motion. d. the gravity pulling on the car keeps them in motion.

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box

Northern switzerland has a fairly cold climate caused by sea winds from the atlantic ocean but souther switzerland tends to be much warmer and sunnier, what could cause this difference?