What molecule loses a proton to form the hydroxide ion, OH??
A) the oxygen molecule, O2
B) the water molecule, H2O
C) the hydrogen peroxide molecule, H2O2
D) the hydrogen molecule, H2
B
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In natural ecosystems, what types of organisms feed off pest species and control the pest populations?
A. prey B. rodents C. pesticides D. natural enemies E. insects
Which of the above molecules would be acidic?
A. a B. b C. c D. d E. a or d
What is the largest climate modifier in the southern hemisphere?
A) the amount of temperature gradient between the south pole and the equator B) the lack of deserts and dry areas in the southern hemisphere C) the fact that a very large portion of the southern hemisphere's surface area is composed of water D) The jet streams are not as strong and more zonal in the southern hemisphere.
Which of the following is not one of the reasons bioluminescence is employed by deep-sea animals?
A) Attracting food B) Communication C) Counter illumination D) Predator avoidance E) Warning coloration