The only major country still using the Fahrenheit scale for temperature determination is ______.
A - canada
B - usa
C - iraq
D - brazil
E - w. Germany
B - usa
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The hydronium ion concentration in an aqueous solution where the pH = 5 equals
A. 1 × 10-5 M. B. 1 × 10-3 M. C. 1 × 10-7 M. D. 1 × 10-9 M.
Faunas became more diverse during the breakup of Pangaea because ____
a. angiosperms dominated b. gymnosperms dominated c. climate was highly variable d. of increased competition for shoreline and shelf habitats e. intercontinental migration was more difficult
Which statement is true concerning a lunar day?
A) A lunar day is shorter than a solar day. B) A lunar day represents the time between when the moon is highest in the sky and the next time it is highest in the sky. C) A lunar day is 26 hours. D) Because of the length of a lunar day, lunar tides usually arrive 30 minutes earlier each day.
Explain the statement, “good ecology is good economics.”
What will be an ideal response?