Deep currents are created by
a. interaction between the sea surface and the wind
b. the difference between temperature and salinity
c. contrasts in density
d. the vertical upwelling and downwelling of seawater
Ans: d. the vertical upwelling and downwelling of seawater
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Which of the following is least likely to disrupt a protein's function?
A) a frameshift mutation that occurs near the beginning of the gene B) a nonsense mutation in the middle of a gene C) a nonsense mutation near the end of a gene D) All of the above are equally likely to disrupt protein function.
Which of the following best represents kinetic energy converted to potential energy?
A) A windmill pumping water up into a water storage tank B) Plants capturing sunlight to produce sugars using photosynthesis C) Turning on a flashlight D) Pulling a boat up onto a shoreline
What is the evidence that atmospheric warming is occurring?
What will be an ideal response?
A pioneer community of plants is essentially a single ________
A) plant B) seral stage C) climax forest D) localized extinction E) migration path