What was the name of the supercontinent that

once contained all of Earth’s land masses?



a. Pangea
b. Pandora
c. Gondwana
d. Laurasia
e. Caprica


A

Biology & Microbiology

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Following implantation, the multiplying cells of the human embryo reorganize to form a gastrula which contains the three primary germ layers

A. true B. false

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In all of the following characteristics, prokaryotes differ from eukaryotes except in  

A.  cell size. B.  multicellularity. C.  chromosomes. D.  nucleic acids as the hereditary material. E.  organelles.

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In fishes, blood leaving the heart goes directly to the

A) swimming muscles. B) kidney. C) gills. D) brain.

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Currently, atmospheric CO2 levels are approximately 400 ppm. The annual mean growth rate in CO2 is about 2 ppm/year. Assuming this trend continues, what would you predict the CO2 level to be in 100 years?

A) 100 ppm B) 200 ppm C) 600 ppm D) 1,000 ppm

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