Flight simulators are used to train new pilots because
a. it would be dangerous to begin teaching people to fly airplanes with no experience with how they work.
b. it is very expensive to fly an airplane, so some training is done with simulators
c. flight simulators can exactly mimic the experience of flight.
d. a and b
select the best answer from the choices provided

The key to stability is feedback between the reservoir and the fluxes into and/or out of the reservoir. assume that the rate of outflow from a reservoir depends on the size of the reservoir according to the following relationship: outflow rate= k x (size of reservoir), where k is a constant. a reservoir of water has a volume of 5000 liters, and the rate of outflow at steady state is 25 liters per minute. what is k? (give both the numerical value and its units.) what is the residence time? what is the relationship between k and the residence time?

Oxygen and nutrients are moved through the body by the: a. circulatory system c. lymphatic system b. digestive system d. reproductive system

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.