Discuss the role that palynology can play in the study of ancient ecosystems. What will be an ideal response?
The study of palynology is the study of palynomorphs, including spores and pollen as well as
marine microorganisms, etc. These microfossils allow reconstruction of the biota of the
environment being studied and often allow determination of relative age and paleoclimate.
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If we divide Earth's current proven oil reserves by current annual consumption of about 26 billion barrels, we see that we have about ________ years of oil supply remaining, at present rates of consumption
A) 15 B) 30 C) 50 D) 80 E) 130
Which of the following is a typical way in which shale is expressed in the landscape?
A. slopes covered by loose debris from overlying rocks B. badlands C. soft slopes covered by small, loose chips D. valleys and other low areas carved into the landscape E. All of these choices are correct.
Global fish consumption has risen sharply between 1960 and 2012. Which of the following is not true?
A) The developing countries are responsible for about 33% of this increase. B) Fish and seafood account for only 1 percent of all calories consumed by humans. C) Fish consumption has increased more rapidly than population growth. D) The developing countries are responsible for about 80% of this increase. E) Overfishing has reduced the population of tuna significantly in the last 50 years.
In which of the following classes of organic compounds must there be at least two oxygen atoms?
A) alcohols B) aldehydes C) carboxylic acids D) ketones