Which example represents an abiotic factor in an aquatic ecosystem? A. Water lilies float on top of a pond.
B. A population of bass is living in a lake.
C. The pH of a lake is decreased by acid rain.
D. Dragonflies feed on small insects near a pond.

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.

What type of competition exsist between two species. turtles and fish

What causes darkening of the skin as melanin production increases