Cell division is triggered when cells reach a certain size because A. the surface area available for importing nutrients and exporting wastes is no longer sufficient. B. the large cell begins to crowd other cells. C. the surface area becomes very large and the cell is flooded with nutrients. D. the cell membrane is too inflexibl

The kobe habor wharfs where the center of japanese exports to other countries. it had 200 wharfs before the earthquake. how many wharfs remained undamaged after the earthquake? a. 130 wharfts b. 3 wharfs c. 30 wharfs

What is the difference between the conducting zone and the respiratory zone of the respiratory system? the conducting zone is a series of cavities and tubes that move air to the respiratory zone where gases exchange with the bloodstream. the conducting zone exchanges gases between the lungs and the alveoli and the respiratory zone is a series of cavities and tubes that move air to the conducting zone. the conducting zone moves oxygen into the cells and the respiratory zone takes carbon dioxide away from the cells. the conducting zone moves oxygen into the bloodstream and the respiratory zone takes carbon dioxide away from the bloodstream.

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