What are 2 pieces of anatomical evidence that lead ichthyologists to consider that sturgeons are a fairly old group of fishes?
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The sturgeon fishes share a number of characteristics with sharks, which are considered to be more primitive by many scientists. These shared characters include: heterocercal tail, and a ventral mouth.
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When water melts from a solid ice cube to a liquid, its volume ________ and its mass ________.
A. Decreases; increases B. Decreases; stays the same C. Increases; stays the same D. Increases; decreases
In non-cyclic photophosphorylation, where do electrons go after being released from photosystem II?
1.through an electron transport chain and into photosystem I 2.into photosystem I, through an electron transport chain, and then into NADPH 3.back into water 4.back into photosystem II
In mammals, the brain region that has become especially important as a "relay center" for information passing from sensory structures to the cerebrum is the
A. hypothalamus. B. cerebellum. C. pons. D. thalamus. E. hippocampus.
Infection with (hepatitis/norovirus/rotavirus) is a common cause of viral gastroenteritis in adults
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