The oceans are slightly acidic, with an average pH of about 6.5
Indicate whether the statement is true or false
FALSE
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The appearance of a star to twinkle, or flicker, is caused by ____ of light through regions of different densities
A) reflection B) refraction C) diffraction D) scattering
In 1947, the U.S. government established the Everglades National Park to help preserve the wilderness of this system. Why didn't this protection effort work?
A. Much of the original Everglades was paved over. B. Populations of native vertebrates left the Everglades, causing the food web to collapse. C. Human population increased in areas surrounding the Everglades. D. Tourism damaged the natural ecosystem. E. Massive water distribution and land development north of the Everglades drained wetlands.
Which of the following bases is not a lactam?
A) adenine B) cytosine C) guanine D) None, they are all lactams.
Phagocytes frequently kill their prey using which of the following reactions?
A) condensation B) hydrolysis C) oxidation D) reduction