The dengue viruses are spread by (fleas/mosquitoes/ticks)
What will be an ideal response?
mosquitoes
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Global air circulation patterns are produced by ____ differences in the amount of solar radiation reaching Earth
a. elevational b. latitudinal c. moisture d. rotational e. longitudinal
Refer to Figure 47-1. The crown of the tooth is made up of the parts labeled:a
1 only b. 1 and 2 only c. 2 and 3 only d. 1, 2, and 3 only e. 1, 2, 3, and 4 only
Which of these events occurs during anaphase?
A) Sister chromatids become separate chromosomes. B) Chromosomes line up in the middle of the cell. C) The nuclear envelope reappears. D) The nuclear envelope breaks up.
If an amphibian zygote is manipulated so that the first cleavage plane fails to divide the gray crescent, then _____
A) the daughter cell with the entire gray crescent will die B) both daughter cells will develop normally, because amphibians are totipotent at this stage C) only the daughter cell with the gray crescent will develop normally D) both daughter cells will develop abnormally