The isotopic record have peaks and troughs with a wavelength of all of the following except
A) 12,000 years.
B) 23,000 years.
C) 41,000 years.
D) 100,000 years.
Answer: A
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The genetic code describes
A) how different codons correspond to amino acids. B) the A-C-T-G sequence of nucleotides in different organisms. C) how codons bind to anticodons. D) none of the above
Acid mine drainage can result from the oxidation of _____
a. pyrite (FeS2) b. calcium carbonate (CaCO3) c. phosphorus (P) d. nitrogen (N) e. quartz (SiO2)
Which number and cause of bird death are incorrectly matched (for the U.S.)?
a. cars/trucks — 80 million b. pesticide poisoning - 500,000 c. wind turbines — 7,000 up to 440,000 d. domestic and feral cats — 250 million e. glass windows, buildings, and electrical transmission towers — 10 million
Which of the following is an accurate statement about the eyewall of a hurricane?
A. It contains strong thunderstorms. B. It forms after the hurricane has made landfall. C. It makes up the inner portion of the eye. D. It is located on the outside of spiral rain bands.