What is included in the thermodynamics system?
a. the universe including all of the planets and stars
b. an individual organism, isolated even from the air around it
c. an ecosystem devoid of living creatures
d. the matter and its environment relevant to a particular case of energy transfer
d. the matter and its environment relevant to a particular case of energy transfer
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Even though coastal areas comprise only 10% of the oceans' area, they make up ____% of the total oceans' fisheries
a. 10 b. 20 c. 60 d. 90 e. 50
Black smokers are rich in ________, while white smokers have high levels of ________
a. iron sulfide; copper sulfide b. copper sulfide; zinc sulfide c. zinc sulfide; copper sulfide d. copper sulfide; iron sulfide
The Florida panther, as an appealing symbol of Florida's conservation campaign, serves as a(n)
A. keystone species. B. endemic species. C. umbrella species. D. flagship species. E. indicator species.
The Cl- ion has a single negative charge and the atomic number of 17. How many electrons are on its innermost shell?
A) 9 B) 18 C) 17 D) 2