Tropical coral reefs support a very diverse and highly populated community, including calcareous algae whose

secretions help "cement" the coral reef together. In this community, the coral reef structure is the algae's ____________
and the algae's job of cementation is its ____________. Fill in the blank(s) with the appropriate word(s).


habitat; niche

Environmental & Atmospheric Sciences

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India's wheat yield per acre is behind all of the following except:

A) Mexico B) China C) United States D) It is behind all of these

Environmental & Atmospheric Sciences

The molecular structure of water has an asymmetrical arrangement of hydrogen atoms causing

A. the oxygen side of the water molecule to have a positive charge. B. the hydrogen side of the water molecule to have a negative charge. C. the overall charge of the water molecule to be neutral. D. the hydrogen side of the water molecule to have a positive charge.

Environmental & Atmospheric Sciences

The science of making maps is

A) demography. B) cartography. C) topography. D) geomorphology. E) meteorology.

Environmental & Atmospheric Sciences

After the explosion of the Deepwater Horizon oil-drilling platform in 2010, Scientists estimate that about ________ of the oil either was naturally dispersed in the water as small droplets or was chemically dispersed

A) 10% B) 25% C) 40% D) 75% E) 90%

Environmental & Atmospheric Sciences