Item |
Source |
Abiotic |
De Agostini - Sapere.it
|
Achene |
Encyclopaedia Britannica 2002
|
Adaptation |
Encyclopaedia Britannica 2002
|
Adventitious |
Encarta
|
Agamic |
The American HeritageŽ Dictionary of the English Language, Fourth Edition
|
Air pollutant |
International Union of Pure And Applied Chemistry - Chemistry and Environment Division - Commission on Atmospheric Chemistry
|
Alga |
Encyclopaedia Britannica 2002
|
Amphipod |
Encyclopaedia Britannica 2002
|
Aquaculture |
Encyclopaedia Britannica 2002
|
Association |
USGS-NPS vegetation mapping program
|