From the beginnings of life on Earth, it took less than a billion years for single-celled organisms to evolve to multicellular organisms
Indicate whether the statement is true or false
FALSE
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The formation of ice from water is accompanied by:
A. absorption of energy as heat B. temperature increase C. decrease in volume D. an evolution of heat E. temperature decrease
In the geology, the term "Precambrian" refers to
A) the eon immediately preceding the Phanerozoic eon B) all eons preceding the Phanerozoic eon C) the eon immediately preceding the Proterozoic eon D) all eons preceding the Proterozoic eon
To find the equivalent resistance of the combination of resistors shown below by the method of possibly repeated applications of combining resistors in series and /or combining resistors in parallel, the first step would be which of the following?
a.
Combine the 6.0 ? and the 7.0 ? in series.
b.
Combine either the 4.0 ? and the 10.0 ? in parallel or the 7.0 ? and the 10.0 ? in parallel first, since either could be the first step with the other the second step.
c.
Combine the 4.0 ? and the 10.0 ? in series.
d.
Combine the 6.0 ?, the 4.0 ?, and the 10.0 ? in series in a single step.
Unpolarized light is passed through polarizer 1 . The light then goes though polarizer 2 with its plane of polarization at 60.0° to that of polarizer 1 . What fraction of the intensity of the original light gets though the second polarizer?
a. 0.125 c. 0.707 b. 0.250 d. 0.500