Rank the elements carbon, sodium, calcium, and iodine in order of decreasing number of electrons
A. CNaCaI
B. ICaNaC
C. ICCaNa
D. CCaNaI
Answer: B
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A. G1 B. S C. G2 D. Mitosis E. Cytokinesis
Persons infected with HIV often die of opportunistic diseases because
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What is characteristic of adult frogs?
a. gills b. sucking air into their lungs c. countercurrent exchange d. pushing air into their lungs e. drawing water by inhalation across their gills
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