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.
Threats to Biodiversity. The primary threats to the savanna biome are humans (for example, poachers are killing elephants for their ivory tusks and hunting animals to the brink of extinction) and global climate change.
Savanna Plant Life. Plants of the savannas are highly specialized to grow in this environment of long periods of drought. They have long tap roots that can reach the deep water table, thick bark to resist annual fires, trunks that can store water, and leaves that drop of during the winter to conserve water.The savanna is covered by grasses such as Rhodes grass, red oats grass, star grass, lemon grass, and some shrubs..There are various types of trees that will grow in particular areas of a savanna biome. They include pine trees, palm trees, and acacia trees..hey have long tap roots that can reach the deep water table, thick bark to resist annual fires, trunks that can store water, and leaves that drop of during the winter to conserve water. The savanna is covered by grasses such as Rhodes grass, red oats grass, star grass, lemon grass, and some shrubs..