The area of the ocean that produces the largest standing stock of commercial fish is in the ________
A) coastal areas
B) bathypelagic zone
C) mesopelagic zone
D) tropical areas
E) upwelling areas
A
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Farms where most of the crops are fed to livestock are called what?
A) Cash-grain farms B) Family farms C) Corporate farms D) Mixed Farms
Much of the tundra and subarctic climatic zones are permanently frozen to an average depth of three meters. This frozen ground is known as ________
Fill in the blank(s) with correct word
In cold climates, regions of permafrost are good places to build on because the ground stays frozen to the surface all year
a. True b. False Indicate whether the statement is true or false
Scientific studies have shown that fish exposed to PAHs in crude oil exhibited changes in ________ that are linked to developmental abnormalities, decreased embryo survival, and lower reproductive success
A) blood concentrations B) body temperature C) gene expression D) heart rate E) metabolism