When you inhale, the diaphragm moves ___
and the intercostal muscles move the rib cage
___.
a. downward...outward
b. outward...downward
c. outward...outward
d. downward...downward
e. outward...upward
A
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Each phase of succession is called a
A. series. B. stage. C. chronometer. D. sere. E. facilitation.
The ease of detecting and treating ____ is a good example of the advantages of genetic screening
a. PKU b. Tay-Sachs c. Marfan syndrome d. color-blindness
e. Down syndromeWhat is the most ancient group of plants alive today?
a. horsetail b. club moss c. hornworts d. liverworts e. gymnosperms
Which of the following is major shortcoming of swimming in South American waters inhabited by candirus?
a. Their behaviour to lead into the urethra of an animal urinating while submerged in water. b. Their behaviour to lead into the anus of an animal while submerged in water. c. Their behaviour to lead into the nose of an animal while swimming in water. d. Their behaviour to lead into the ears of an animal while swimming in water.