How do whales differ from fish?
a.
whales use blowholes for breathing.
b.
whales have scales that cover their skin.
c.
whales develop lungs following metamorphosis.
d.
whales reproduce through external fertilization.

Ineed some everybody. the production of cells during mitosis into specialized function is called: recombination or differentiation

How does upwelling affect coastal fisheries? upwelling damages nutrient supplies at coastal fisheries as the warm, nutrient-rich surface water is replaced by nutrient-poor, cold water. upwelling damages nutrient supplies at coastal fisheries as the cold, nutrient-rich surface water is replaced by nutrient-poor, warm water. upwelling improves the nutrient supply at coastal fisheries as the warm, nutrient-rich surface water replaces the nutrient-poor, cold water. upwelling improves the nutrient supply at coastal fisheries as cold, nutrient-rich water replaces the warm, nutrient-poor surface water.

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