The ________ of a sea urchin in a kelp forest is eating kelp
Fill in the blank(s) with correct word
niche
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What is the principle behind wetlands-based sewage treatment systems?
A. To mimic natural processes in a series of tanks filled with aquatic plants. B. To use high strength chemicals to disinfect large amounts quickly. C. To let nature take care of it by dumping raw sewage in rivers. D. To simply pour sewage into existing, unlined natural wetlands.
The Dalai Lama travels the world supporting the people of Tibet and promoting
A) Buddhism. B) Catholicism. C) Hinduism. D) Islam. E) non-violent protestantism.
What prevents stars greater than about 100 times the Sun's mass from existing?
A. The gravitational attraction would overcome the rate of thermal expansion leading to a black hole. B. The gaseous material of the universe is too widely dispersed to allow for the formation of stars of this mass. C. Fusion cannot take place at these higher mass levels. D. The rate of thermal expansion would overcome gravitational attraction leading to explosion.
Which of the following scientists is most closely associated with analyzing the base content of DNA?
A) O. Avery B) G. Beadle C) E. Chargaff D) J. Watson