Marine mammals, like whales, do not drink seawater.
Answer the following statement true (T) or false (F)
True
Marine mammals, like whales, do not drink seawater.
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Impetigo is due to an infection caused by
A) Staphylococcus aureus but not Streptococcus pyogenes. B) Streptococcus pyogenes but not Staphylococcus aureus. C) either Staphylococcus aureus or Streptococcus pyogenes. D) neither Staphylococcus aureus nor Streptococcus pyogenes.
The two most abundant ions in plasma are ____
a. HCO3? and Ca2+ b. HCO3? and Cl? c. Na+ and Ca2+ d. Na+ and Cl?
e. Na+ and K+The carbon atoms in the cellulose of a wood log originally came from _____ absorbed by the plant.
A. glucose B. carbon dioxide C. nutrients in the soil D. water E. oxygen
Why can bacteria undergo rapid evolutionary change?
a. Bacteria pass through numerous bottlenecks. b. Bacteria mutate at high rates. c. Bacterial populations are large and can reproduce quickly. d. Bacteria experience intense selective pressure.