An electromagnetic wave has a frequency of 8.9 x 1021 Hz and a speed of 3 x 108 m/s. Use the equation for wavelength to calculate the wavelength of this
wave.
O A. 3 x 108 m
B. 3.37 x 10-14 m
O
C. 2.67 x 10 30 m
D. 5.41 x 10-7m

How can active reading strategies you? o a. they can you get into better physical shape. o b. they can you read fewer science articles. o c. they can you understand what you read. o d. they can you avoid reading altogether.

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.

According to cell theory; which structures carry out the basic function of living things? a. atoms b. organs c. cells b. nuclei