The ecosystem has been changing rapidly and the fastest changes are taking now. It’s affected by overfishing because it’s a big part of our food source. Also affected by the distribution of species on Earth is becoming more homogeneous. This is caused by the extinction of species or loss of populations. Also the amount of water stored behind large dams is estimated to be three to six times the amount held by natural river channels this excludes natural lakes. Overfishing has started to become a big thing because it’s wiping out the fishes and ruining the coral reef. Within marine ecosystems, populations of fished species have been affected by the world’s growing demand for food and animal feed. Since industrial fishing began, the total mass
