You are studying an ecosystem on your campus. After a solid base of carefully observed and described facts, your
next step would be to ____.
a. make more observations
b. make a hypothesis
c. share your data with others
d. wait for instructions
e. design an experiment
b
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Which of the following organization levels is
the least inclusive?
a. population b. community c. cell d. atom e. molecule
Make organic compounds Organisms that make their own organic compounds from inorganic substances are called
a) animals. b) animorphs. c) heterotrophs. d) autotrophs.
Diagnosis of rabies is confirmed by
A) Gram stain. B) direct fluorescent-antibody test. C) patient's symptoms. D) passive agglutination. E) patient's death.
The final reaction in blood clotting is
A. prothrombin ? thrombin. B. plasmin ? fibrin. C. platelets ? prothrombin activator. D. fibrinogen ? fibrin. E. fibrin ? thrombin.