If the pH of a solution is decreased from 9 to 8, it means that the concentration of _____
A) H+ has decreased to one-tenth (1/10 ) what it was at pH 9
B) H+ has doubled compared to what it was at pH 9
C) H+ has increased tenfold (10X) compared to what it was at pH 9
D) OH- has increased tenfold (10X) compared to what it was at pH 9
C
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Using the sudden bloom of cyanobacteria in a lake due to anthropogenic fertilizer inputs as an example, explain the coupling of carbon, nitrogen, and oxygen cycling. Exclude discussion of all organisms other than microorganisms
What will be an ideal response?
Thyroid hormone deficiency can lead to a condition known as ____
a. hypothyroidism b. hyperthyroidism c. rickets d. AIDS e. bowed legs
Both a spore and a gamete are reproductive cells that develop into a new plant by themselves.
a. true b. false
Which bone is the longest and strongest bone in the body?
A. femur B. tibia C. pelvis D. humerus E. fibula