If Argus fell into the waters around Labrador (temperature 1°C, or 34°F), what reaction is most likely to happen?
A) dilation of the blood vessels of the dermis
B) sweating
C) piloerection
D) increased blood flow to hands
C
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True-breeding tall snapdragons with red flowers were crossed with short snapdragons with white flowers. The resulting F1 progeny were all of medium height and had pink flowers
When the F1 progeny are crossed with each other, what proportion of the F2 progeny would be of medium height and have pink flowers? A. 1/4 B. 1/2 C. 1/8 D. 1/16 E. 3/4
Choose the correct order of the three main types of cytoskeletal elements in increasing order of size.
A. Microtubules, flagella, cilia B. Actin filaments, intermediate filaments, microtubules C. Microtubules, cilia, flagella D. Actin filaments, intermediate filaments, flagella E. Microtubules, intermediate filaments, actin filaments
What does the ozone layer absorb?
a. heat b. pollution c. ultraviolet radiation d. infrared radiation e. oxygen
As part of your research project, you travel to an island to learn more about the habitats and relationships of flies, spiders, and centipedes. You and your assistant plot out five different areas on the island and count the numbers of flies, spiders, and centipedes living in each plot. Your results show the following: Plot Flies Spiders Centipedes1300254242617103147152147397805791393The most plausible explanation for the high number of spiders in plot 4 is:
A. the flies and spiders worked together to eliminate the centipedes. B. there are too many flies overall. C. the spiders preyed on the centipedes and ignored the flies. D. there are no centipedes to prey on the spiders and there are abundant flies upon which to feed.