North American Wildland Plants, Third Edition: A Field Guide Wilderness is that place where there are no works of man and only that which spontaWilderness Point [ 53 ] wild nevada neously arises without man's ... R Moore,S Slovic 被引量: 34发表: 2005年 ...
Long-Term Effects of Aeration and Fire on Invasion of Exotic Grasses in Mixed-Brush Plant Communities Invasion of exotic grasses into grasslands dominated by native plants changes fire cycles and reduces biodiversity. Brush management practices that create ... F Ayala-A.,JA Ortega-S.,T Fulbright...
ITT Cannon temporarily shut down plants in Santa Ana and Fountain Valley, removing 2,800 commuters from the road, an option which is not available year-round. - Encouraging car-pooling and van-pooling. County officials have calculated that even a small increase in ridesharing--for example, incr...