Echinoderms

b) Echinoderms is a given to any member of the Phylum Echinodermata of marine animals. The first Jurassic star fish [200-145 million years ago] was discovered in the Antarctic. c) Plants In the Antarctic Peninsula, beautiful plant fossils were discovered preserved

there has been greater absorption of CO2 by the oceans. When CO2 is in the ocean it reacts to produce carbonate ions and H+ ions leading to ocean acidification. Major effects of ocean acidification are already being seen; mollusks, coral, and echinoderms that have shells composed of calcium carbonate are eroding away due to acidification (Kerr, 2010). Ocean acidification, climate change, habitat loss, and extinction of species will continue if there is no change in CO2 emissions. Such changes

Cambrian period 543-490 million years Introduction The Cambrian Period marks the beginning of the Paleozoic Era. This period gets its name from a place in Wales where the first examples of this type of ancient life was found. The period lasted for nearly 53 million years, from about 543 million years ago until 490 million years ago. The Cambrian Period marks an important point in the history of life on earth; it is the time when most of the major groups

Crikey! What an amazing sight! Known as one of the world’s natural seven wonders “lives” the Great Barrier Reef. Extending like a pulled piece of taffy along the Eastern coastline of Australia, this reef, discerned as the largest biotic structure on the planet. In short, the Great Barrier Reef’s biodiversity has supported thousands of habitats and species, while exuding beauteousness unfathomable by most, bringing millions of tourists annually. Unfortunately, among all of this wonderment lurks destruction

a hydrostatic skeleton for movement (evolved out of animals having a coelom) • What is the difference between protostomes and deuterostomes? Protostomes (arthropods, mollusks, and worms): Pore becomes mouth Deuterostomes (chordates and echinoderms): Pore becomes anus • What are the different feeding types? Suspension feeder – “filter feeder”: capture food by filtering out particles suspended in air or water (ex. baleen whale and krill shrimp) Deposit feeder – eat their way through substrate

Myles Lawary 4-4-17 Mrs.O’Connor Marine Science Barrier Reef The Barrier Reef is the largest reef in the world, and it is located in Australia. It is made up of different types of coral and fish, but sadly the reef is bleaching. Bleaching is the process of water temperatures getting too warm and as a result coral reefs can bleach. When water gets too warm, corals will get rid of the algae living inside

Cambrian period 543-490 million years Introduction The Cambrian Period marks the beginning of the Paleozoic Era. This period gets its name from a place in Wales where the first examples of this type of ancient life was found. The period lasted for nearly 53 million years, from about 543 million years ago until 490 million years ago. The Cambrian Period marks an important point in the history of life on earth; it is the time when most of the major groups

The pelagic zone of the ocean is also commonly called the open ocean. In depth in extends from the surface, down to the deepest trenches. However, it does not include the coasts, near shorelines. The pelagic zone consists of five layers; the epipelagic, mesopelagic, bathypelagic, abyssopelagic, and the hadopelagic subzone. The first zone, the epipelagic zone, also known as the euphotic zone extends from the surface of the water to 200 meters. This is the most commonly explored and known portion of

species biodiversity, and potential localised extinction of both the target species and other species that are indiscriminately fished from the coral reef. Loss of keystone species, for example, predators, such as triggerfish and pufferfish, of echinoderms, such as sea urchins, through overfishing can affect not just fish communities but the entire ecosystem, leading to major effects on reef processes (Callum M Roberts). Urchins create numerous well documented effects on reef communities, and changes

Dalia Rodriguez Historical Geology 205 November 25, 2015 KT Extinction Abstract The Cretaceous-Tertiary extinction, also known as the K-T extinction, was a global extinction event that struck the Yucatan Peninsula at the end of the end of the Mesozoic Era, 65 million years ago. Walter Alvarez first discovered a meteorite big enough to be called a small asteroid that hit the Earth, creating the Chicxulub crater. Once the asteroid struck the North American continent