Which of the following is not a function of the excretory system?
What will be an ideal response?
elimination of undigested foods
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Protists are classified into a single kingdom because of which of the following features?
A. They are eukaryotes, but not fungi, plants, or animals. B. They are microscopic. C. They are unicellular. D. All types of nutritional modes are found. E. They are monophyletic.
Infectious hepatitis (hepatitis A) is usually transmitted by
A. fecal-oral contamination of food or drink. B. contaminated blood. C. sexual activity. D. inhalation of droplets.
____ are multicelled projections that protrude
from the lining of the small intestine.
a. Sphincters b. Brush borders c. Microvilli d. Villi e. Macrovilli
A thermal inversion occurs when a warm stagnant air mass traps a cooler air mass containing smog beneath it
Indicate whether the statement is true or false