Oral isotretinoin is the best treatment for patients with moderate acne in whom antibiotics are unsuccessful and for those with severe inflammatory acne. Dosage of isotretinoin is usually 1 mg/kg once/day for 16 to 20 wk, but the dosage may be increased to 2 mg/kg once/day.
Lots of different predators will prey upon other predators: Golden eagles are well known predators of smaller hawks. Collared lizards will eat other lizards. Crocodilians will feed on other predators, such as monitor lizards, snakes and even lions that come to the water to drink. Many snakes will eat other snakes. Some frogs, like the horned frogs of South America and the African bullfrog, readily feed on other frogs.
JOURNAL OF CREATION 24(2) 2010 75. Which prey do predators eat? E. Norbert Smith. It has long been held that predators preferentially take the young, weak and diseased prey. This concept is. central to natural selection and is one of the tenets on which evolution rests. The premise is flawed. The entire. superstructure built on natural selection providing a mechanism for evolution collapses into disarray if predators. do not actually take the weakest individuals.