In plate tectonics, intense geologic activity occurs at _____.
What will be an ideal response?
plate boundaries
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You are studying the effect of a new pollutant on an ecological community in a lake that has three mysterious species. You sample the concentration of the pollutant in each species for 4 years after the pollutant first appeared. The graph below displays your data. Each species is represented by a different color and marker.
What will be an ideal response?
Plants adapted to extreme drought conditions are termed _______________
Fill in the blank(s) with correct word
Which represents the amount of rivers in the world that are heavily polluted?
A. 1/2 B. 1/4 C. 3/4 D. All
Carbonate rocks contain the ________ ion as part of their chemical composition.
A. CO32- B. CaCO32- C. CaO32- D. limestone E. Carbonate rocks do not contain ions.