____________________ ripple marks form in response to wind or water moving in one direction. Fill in the blank(s) with the appropriate word(s)
Current
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Which of the following statements is false?
a. In the process called speciation, one species splits into two or more different species. b. Geographic and reproductive isolation occur in sequence. c. Sooner or later all species become extinct. d. By definition, the fittest animals are the largest and strongest animals. e. Difference environmental conditions lead to different selective pressures.
Why is it important to understand our interactions with the environment? What will studying environmental science enable you to do?
What will be an ideal response?
A type of mirage in which towering castles appear out of thin air is called a(n) ________
Fill in the blank(s) with correct word
Of Earth's total number of species, why are the fewest in the marine pelagic realm?
a) There is more area on land for different species. b) Uniform conditions in the pelagic realm make fewer specialized environments for organism adaptation, evolution and radiation into different species. c) Organisms need a hard substrate (either land or sea bottom) in order to evolve into different species. d) Evolution of differing species is triggered by extinction, but extinction is rare in the pelagic environment. e) The pelagic realm contains the photic zone, and solar radiation in the photic zone suppresses the number of new species that evolve.