What respiratory structure controls breathing? A.
diaphragm
B.
lungs
C.
heart
D.
trachea

22. the effect of threshold braking is to a cause skids. b. lock wheels. c. prevent locking of wheels. d. increase stopping distance.

Which branches of natural science include the study of an organism that lived 10 million years ago

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?