| Human Impact on the Environment |
| All plants and animals have an impact on their environment to a greater or lesser degree. The presence of plant life on Earth is the reason why our atmosphere is so oxygen-rich. But successful species live in balance with the environment that produced them. Mankind is unique in the range of habitats we have mastered, but there are concerns that population pressures, intensive agriculture and industrial activities are threatening our environment both locally and globally.
Cairo, one of the world's fastest-growing cities, with a population of 1.5 million in 1947 swelled to 10 million by 2000.
Urban and agricultural development dominate this Landsat view of California's San Joaquin Valley. |
