An anthropologist discovers the fossilized heart of an extinct animal. The fossil indicates that the heart was large, well-formed, and had four discrete chambers with no connection between the left and right sides. Which conclusion is most strongly supported by the finding?
a. The animal had evolved from birds
b. A species had little to no need to regulate blood pressure
c. The animal was most closely related to alligators and crocodiles
d. The animal was likely an invertebrate animal
e. The animal was endothermic and had a high metabolic rate
Answers: 1
Biology, 22.06.2019 06:50
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Which of the following statements about protists are true? a.they are typically found in moist environments. b.they are all unicellular. c.they have a nucleus. d.they are all multicellular.
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Ihave no idea how to solve these. plus there's another question that is 2) a 10 kilogram meteorite is collected in space and brought back to earth. it is composed of 1.25 kg of uranium-238 and 8.75 kg of lead-206. how many u-238 half lives have passed? what is the approximate age of the meteorite?
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An anthropologist discovers the fossilized heart of an extinct animal. The fossil indicates that the...
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