The major Canadian geological deposit that contains numerous Cambrian animals is the
A. Stomatolite formation.
B. Ordovician coast.
C. hydrothermal clays.
D. Gondwana formation.
E. Burgess shale.
E. Burgess shale.
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Which of the following statements about plant macronutrients is/are true? Check all that apply.
_____ They approach or exceed 1% of a healthy plant's dry weight. _____ They reduce the need for CO2 during photosynthesis. _____ A deficiency in any one can have severe effects on a plant's growth. _____ They can have important implications for human nutrition. _____ The ability of the plants to take up minerals is affected by soil pH.
What is the part of the kidney where urine is formed?
A. The blood vessels B. The liver C. The nephron D. The ureter
Under the influence of antidiuretic hormone, you would expect to see an increase in ________
A) plasma volume B) blood pressure C) urine volume D) sodium reabsorption
The very first vertebrates were
A. fishes with jaws. B. fishes without jaws. C. cartilaginous fish. D. bony fish.