Where is most of the carbon stored in the oceans?
A. Precipitated out as limestone
B. Dissolved in the water
C. Trapped in the shells of sea animals
Answer: B
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Regardless of whether ____________________ are a separate species from Homo sapiens, their brains were slightly
larger than those of modern humans Fill in the blank(s) with the appropriate word(s).
The five major factors contributing to extinction today are ________
A) habitat loss, invasive species, pollution, overexploitation, and climate change B) catastrophic storms, invasive species, earthquakes and associated tsunamis, pollution, and agriculture C) air pollution, water pollution, toxic waste, ozone depletion, and agriculture D) hunting, fishing, habitat destruction, crop production, and the draining of wetlands
The two keys to determining the absolute age of a rock are
A) measuring the abundance of parent isotope and measuring the abundance of daughter isotope. B) knowing the half-life and measuring the abundance of parent and daughter isotopes. C) knowing the composition and the geologic period the rock is from. D) identifying all the minerals in the rock and knowing the half-life of each mineral.
According to Wien's Law, which of the following would have a peak energy emission at the longest wavelengths?
A) an automobile engine that has been running for an hour B) the illuminated headlights of an automobile C) the Sun D) a rock on an open plain on a hot day E) the Earth as a whole