5 Major Extinction Events in Earth’s History Earth has had many extinction events in its life time, but there are 5 events that have been named major events due to the extreme amount of species that were killed off due to the event. The events, in order from first occurring to most recent, are the Ordovician – Silurian Extinction event (450-440 MA), the Late Devonian Extinction (375-360 Ma), the Permian – Triassic Extinction Event (252 Ma), the Triassic – Jurassic Extinction Event (201.3 Ma), and
(Aloe dichotoma), Adélie penguin, North Atlantic cod, Acropora cervicornis and coral are either extinct or threatened of being so. The death of the last Golden Toad in 1999 (Bufo periglenes) in Central America marked the first documented species extinction due to the rapid climate variation. Climate change is referred to as a change in the statistical distribution of weather patterns, which lasts for an extended period of time, that is usually decades to millions of years. The climate
can lead to a possible extinction which brings extreme danger to not only other marine life, but to humans and the overall ecosystem as well. Shark finning/hunting must be strictly prohibited to prevent an otherwise inevitable extinction of sharks.
demonstrates how far humans have damaged the ecology with their wrong sanitation habits. The only directions where the plastic thrown into the ocean would end are washed back on the shore or sank to the deep sea, Dr. Alan Jamieson, a professor in marine ecology at Newcastle University in the UK, said. No other options These two places are the only destinations for the plastic, he said. The team analyzed all kinds of animals from the Marianas Trench, the deepest in the
War of the Whales is not only a novel, it is a porthole into understanding the complex systems of marine life and the detrimental consequences that follow human activities. The novel portrays two men, oceanographer Ken Balcomb and his environmental attorney Joel Reynolds on their complex mission to expose the American Navy’s direct association with the unexplained mass strandings of whales in the Bahaman Islands. The novel reveals how national security and the need to safeguard the ocean environment
which was about 56 million years from the end of the prior Precambrian to the beginning of the Ordovician Period. The Cambrian period is the beginning of a large difference in life on Earth. Before the Cambrian most of the life was very simple and unicellular. For the first time we began to see more multicellular forms of life. "The oceans became oxygenated. Although there was a lot of atmospheric oxygen by the beginning of the period, it wasn't until the Cambrian that there was a sufficient reduction
Native Hawaiians caught at least 50 percent more fish than the modern Hawaiian (Main 1). Hawaiians also harvested about 15 meters of fish. Hawaiians where able to keep fishing in a way where there was no way that they could lose, or have any extinction of any fish. They where able to make living work off of the ocean (Weuthritch). Until time passed, in about the 1980’s the Hawaiians one way source of food changed. People in Hawaii used many fishing methods during the old times. According
be in the Trichechus family. This sea creature is believed to evolve around the similar time as the dugongs. The West Indian Manatee and the dugong believe to look very identical. However, scientific DNA tests have showed that neither of these two marine mammals are connected/related to any other animals. This specie is an aquatic mammal, classified as a herbivore and is also known as the Trichechus Manatus. The West Indian manatee lives around the district areas of warm subtropical coastal regions
In 2011, one of the world greatest natural disaster struck Japan and Pacific Rim. The 2011 Japanese Tsunami affected Japan locally and the world globally negatively. Marine life, Global waste, and Power plant failures affected the world globally. While marine life traveled to North America, high radiation levels, and waste traveling across the globe were all caused by the tsunami and earthquake. Likewise, there was also local effects similar which consisted of human casualties, preparation for future
Biology Ecosystem Research Assignment on Shark Bay Part 1: Ecosystem description a) Shark Bay is located in Western Australia. It is a World heritage area, which cover over 2.2 million hectares. Shark Bay is home to many marine and land animals, supporting 26 different endangered species. Shark Bay is an area of zoological importance and features at least 820 species of plants. Shark bay is located in the transition zone between three climatic regions and between two major botanical areas. Shark