In tidal pools,
A) oxygen concentrations are usually higher during the day than during the night.
B) carbon dioxide concentrations are usually higher during the day than during the night.
C) salinity is usually higher during the night than during the day.
D) temperature is usually higher during the night than during the day.
A
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Plant cells produce oxygen gas
a. by splitting carbon dioxide. b. during respiration. c. by splitting ribulose bisphosphates. d. by splitting molecules of water. e. by breaking down glucose
Answer the following statements true (T) or false (F)
1.A dinoflagellate has both a transverse flagellum and longitudinal flagellum. 2.Golden algae, diatoms, and brown algae contain yellowish pigments. 3.Alternation of generations means having alternating, multicelled haploid and diploid phases in a life cycle. 4.All protists are single-celled. 5.Protists can be heterotrophs.
Hypoparathyroidism leads to a dramatic drop in blood calcium, which causes
A. tetany (convulsions). B. cretinism. C. sleepiness. D. mental retardation. E. lethargy and hair loss.
All prokaryotes are in the domain ________
A) Bacteria B) Prokarya C) Eukarya D) Prokaryotes are in different domains.