Compared to oceanic waters, coastal waters are much more productive areas. Describe at least 3 factors that contribute to the high productivity of these waters
What will be an ideal response?
Coastal waters have the advantage of lying next to terrestrial areas. Runoff from land carries with it high concentrations of nutrients that support the growth of dense populations of phytoplankton. Coastal upwelling is another source of nutrients in these waters. In addition, the shallow nature of these waters means that phytoplankton will never be light limited as a result of vertical mixing. Finally, the abundance of relatively large phytoplankton means that animals feeding on these will also be large with the ultimate result being a reduction in the number of trophic levels in these waters. This means that less energy is wasted from the transfer of matter between trophic levels.
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Animals such as humans would be classified as:
A. photoautotrophs. B. photoheterotrophs. C. chemoautotrophs. D. chemoheterotrophs.
Which of the following is a function of RNA that is dependent on its three-dimensional structure?
A. catalytic role in translation and splicing B. transient carrier of genetic information C. carrier of amino acids to the site of protein synthesis D. information storage as double-stranded RNA helices in viral genomes E. All of these functions of RNA are dependent on its three-dimensional structure.
The process whereby one species gives rise to several others that exploit different features of the environment is known as
A) exponential growth. B) coevolution. C) adaptive radiation. D) competition.
All of the following are distinctions between alpine tundra and arctic tundra except:a
Alpine tundra is located at high altitudes. b. Alpine tundra typically lacks permafrost. c. High elevations of temperate mountains do not have the great extremes of day length that are associated with the changing seasons in high-latitude biomes. d. The intensity of solar radiation is greater at high elevations than at high latitudes. e. Alpine tundra receives less precipitation than arctic tundra