What do aquatic groups ranging from foraminifera, to corals, to bivalve mollusks require in order to build their hard parts?
A. Oxalic acid
B. Potassium carbonate
C. Protein
D. Calcium carbonate
E. Iron oxide
Answer: D
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All Prochlorococcus strains contain
A) chlorophylls a and b. B) chlorophyll a and phycobilins. C) chlorophyll b and phycobilins. D) chlorophylls a and b and phycobilins.
Maggie was told she has a positive titer to measles. Which of the following could explain this?
A.) She was vaccinated against measles. B.) She had measles sometime in her life. C.) She has measles now. D.) The test was a false positive. E.) All of these choices are correct.
About 1 in every 1,000 women has three X chromosomes, a condition known as ________ X
Fill in the blank(s) with correct word
If a couple was attempting to get pregnant, which foods should they eat to avoid ingesting high amounts of toxins?
A) High-fat salmon B) High-level carnivores such as tuna C) Meals microwaved in plastic bags D) Organic grains, fruits, and vegetables E) DDT-treated vegetables