Until the 1600s, people who investigated problems related to our understanding of the natural world were called

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?

What pattern of migration do whales follow?

An uncomfortable feeling in the ears when descending in an airplane is caused by changes in air pressure on the: a. inner ear b. middle ear c. eardrum d. hammer/anvil