In the tropical deciduous forest, the amount of ________ defines the seasons
Fill in the blank(s) with correct word
rainfall
Biology & Microbiology
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Amniocentesis is a procedure that is normally used
A. to reduce the risk of genetic disease. B. for gene therapy. C. to change the sex of the fetus. D. for diagnosis of genetic disorders. E. for nourishing the fetus.
Biology & Microbiology
____ glands lack ducts
a. Endocrine b. Muscular c. Nervous d. Exocrine e. Connective
Biology & Microbiology
Grinding of food is a function of the
a. incisors. b. canines. c. premolars. d. molars. e. molars and premolars
Biology & Microbiology
Some aquatic invertebrates, such as lobsters and crabs, have ____, which are filamentous or platelike respiratory organs that increase the surface area available for gas exchange with water.
A. book lungs B. a tracheal system C. gills D. a siphon E. villi
Biology & Microbiology