What is convergent evolution?
A) Organisms that evolve to look similar due to environmental conditions
B) The natural selection applied to one population rather than another
C) The random alteration in genetic variation
D) Evolution due to geographical isolation
A
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Reversing environmental damage to the biodiversity and natural dynamics of an ecosystem caused by humans is called ____________________.
Fill in the blank(s) with the appropriate word(s).
Stream discharge calculates:
a. the distance that a water packet can move along the stream in a given period of time b. the mass of water in stream moving past particular point in a given period of time c. the volume of water passing through a cross section of the stream in a given period of time d. the loss of stream water due to evaporation and infiltration
Scientists use proxies to study climate in order to measure
A) current levels of carbon dioxide. B) changes in temperature over the past 100 years. C) changes in the ozone layer over the past 30 years. D) climates hundreds and thousands of years ago.
?Why do you think controlling water pollution from point sources might be easier than water pollution from nonpoint sources? Use examples
Fill in the blank(s) with the appropriate word(s).