Which of these can the Doppler effect be used to deduce in astronomy?
A.
the shape of the orbital path of an object
B.
whether the object is traveling toward or away from us.
C.
the chemical composition of the object
D.
the type of spectrum the object emits

In which of the following conflicts did the distribution of ethnic groups act as a centripetal force? cyprus afghanistan north and south korea iraq former yugoslavia

Which of the following is not an example of homeostasis? a) perspiring in order to restore normal body temperature b) feeling hungry and eating to restore the level of blood glucose to normal c) feeling hungry at the sight of appetizing food d) quenching thirst and drinking water to hydrate the body e) all of the above are examples of homeostasis

25 points i think it's a, am i correct