The speed of sound through air is about

a) 340 m/s
b) 2,000,000 m/s
c) 3,000,000 m/s
d) 3,000,000 m/hour

Which plan groups foods according to types and indicates how much of each type should be eaten daily for a healthy diet? a.mypyramid plan b.food guide pyramid plan c.dietary guidelines for americans d.dietary pyramid guidelines

Which one is not a part of the base of the cranial cavity? a.scala anterior b.scala media c.scala lateralis d.scala posterior

What is the neurological science behind seizures?