Organisms that dwell in dark caves, in wells, or on the ocean floor often depend on which of the following biogeochemical processes?
A) chemosynthesis
B) endogenic processes
C) nutrient leaching
D) photosynthesis
E) nitrogen fixation
A
You might also like to view...
The practice of individuals and corporations owning businesses and keeping the profits is called
A. communism B. individualism C. statism D. capitalism
ANS: C
Oxygen in itself is a very reactive element. It binds quickly to other materials. Remember, free oxygen only became abundant in our atmosphere when photosynthetic organisms began producing more. Thus, if there is a large amount of free oxygen, then there is something present that is replacing it in the atmosphere. This is likely to be a life-form of some sort. Information can be found in the section Are There Other Ocean Worlds
The scientific method is a useful tool beyond the confines of science fields. It can be used in everyday
life, by any person. Indicate whether the statement is true or false.
When people who speak a given language migrate to a different location and become isolated from other members of their group
A) their language usually shows very little change even over a long period of time, despite the appearance of a small number of changes typical of different dialects. B) they immediately develop a literary tradition. C) isolation usually results in the differentiation of one language into dialects, followed eventually by two distinct languages. D) they lose their linguistic abilities. E) groups form multiple dialects.