After the boom-bust-boom of the fifties and sixties, the borough went into a third and more severe decline again in the mid-1970s along with much of the Rust Belt so that population was just 2,804 at the 2000 census. Now in the 2011 Brownsville still has a handful of buildings condemened or just borded up.
One threat to these Savanna biomes is the animals which graze upon it. Other biomes such as Taiga or Rainforest have a high tree quantity which means that less grass is able to grow for animals to graze on. However, since Savannas have few trees and much wide open space than other biomes an herbaceous layer grows much easier.
Effects of Deforestation. All rainforests (tropical, subtropical and temperate) are under threat from human activity at the present time. They are being destroyed at an alarming rate, that could potentially lead to many different types of environmental catastrophe, not only in the local forest zone, but globally.The greatest threats comes from deforestation (tree removal by various means and for various purposes) and mining.hey are being destroyed at an alarming rate, that could potentially lead to many different types of environmental catastrophe, not only in the local forest zone, but globally. The greatest threats comes from deforestation (tree removal by various means and for various purposes) and mining.