If you separated the components of blood and looked closely at only the plasma, you might find ________
A) white blood cells
B) red blood cells
C) hormones
D) platelets
C
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Which of the following groups of biomes is listed in order of greatest to lowest evapotranspiration ratio?
A. rain forest, deciduous forest, desert B. desert, deciduous forest, rain forest C. deciduous forest, desert, rain forest D. desert, rain forest, deciduous forest E. deciduous forest, rain forest, desert
Maintenance of the uterine lining during pregnancy in mammals requires
A. LH. B. estradiol. C. FSH. D. progesterone. E. testosterone.
What is the role of the ozone layer?
A) It reduces the amount of UV light that reaches Earth's surface. B) It increases photosynthesis in Antarctic phytoplankton. C) It increases the amount of sunlight that reaches the poles. D) It increases the gyres. E) It increases the levels of chlorofluorocarbons (CFCs) in the upper atmosphere.
A new microbe has been isolated from hot springs in Yellowstone National Park. These cells are extremely thermophilic. In which of the following groups will this organism be classified?
A. Bacteria B. Protozoa C. Archaea D. Helminths