Predator and prey populations ___________ over time
a. fluctuate
b. remain relatively constant
a
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What personal characteristics and events in Gregor Mendel's life significantly contributed to his ultimate contribution to the study of inheritance?
A. His training in physics and mathematics at the University of Vienna. B. He failed his physics exam. C. He failed his natural history exam. D. He got his teaching license at the age of 21. E. He got a job as a substitute teacher and enjoyed it.
An average gram of forest soil contains about
A. 4 × 107 protists. B. 2 × 109 fungi. C. 4 × 107 bacteria and archaea. D. 2 × 109 bacteria and archaea.
People with cystic fibrosis often suffer from a lack of oxygen. What symptom is a direct result
of a lack of oxygen?
a. lack of energy b. hyperactivity c. nervous disorders d. kidney malfunction
Match the organism to the supergroup it belongs.
Trypanosoma gambiense A) Opisthokonta B) Amoebozoa C) Excavata D) Chromalveolata