Volcanic eruptions are good examples of punctuated equilibrium
Indicate whether the statement is true or false
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How is the discharge of a stream calculated? What will be an ideal response?
The hearth area of the Industrial Revolution was northern England
Indicate whether the statement is true or false
Which of the following is an example of a persistent pollutant?
A. Bacteria in treated sewage sludge that is spread on fields. B. DDT which is found in soil years after its use but is eventually destroyed by soil bacteria. C. Organophosphate insecticides that kill insects for several days but do not bioaccumulate in food chains. D. Carbon monoxide that breaks down after reacting with oxygen. E. None of these is an example of a persistent pollutant.
What is the distinctive type of agriculture practiced in the dry lands of developing countries?
What will be an ideal response?