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 Grasslands. 1  Many animals of the savanna are endangered due to overhunting and loss of habitat. 2  The grassland in Australia is called the Bush. 3  Many animals migrate out of the savanna during the dry season. 4  Some animals in the savanna, like vultures and hyenas, are scavengers which eat other animal's kills. The African savanna boasts the largest land animal, the elephant, and the tallest land animal, the giraffe. The baobab tree can live for thousands of years. The savanna has the highest biodiversity of herbivore animals of any biome. Many of the animals in the savanna have long legs which helps them when migrating long distances.