Cretaceous–Tertiary extinction event

The K-T or the Cretaceous-Tertiary extinction, was a mass extinction over unknown origin that took out an estimated 60-75 percent of all the species on earth 66 million years ago, most famously the dinosaurs. It was the end of the Cretaceous period and the Mesozoic Era and created the beginning of the Cenozoic Era that is still happening today. Geologically speaking this extinction happened in a very short amount of time. Although the most well known species to go extincted during this time was…

AMERICANA SO IMPORTANT? Before I give the importance to these amazing creatures I would like you to know first what this creatures are. These creatures have existed for more than 300 million years. Meaning they have survived at least one massive extinction event and numerous catastrophes. Scientists have identified approximately 4,500 species of these creatures and 30 are classified as pests. And guess where Periplaneta Americana is identified? These creatures are hard to kill and they are…

For 16 years, scientists wondered just what had happened with corals in the Florida Keys. In this time period, over half of the corals had perished. They later discovered that the greatest decline was in elkhorn coral. Finally, research showed that the massive coral disappearances were caused by a disease by the name of white pox. The scientists have solved the elkhorn coral mystery using the scientific method - by making observations, conducting experiments, and drawing conclusions. Initially,…

unexpected events happen that made the planet earth to transform radically. This event is known as the Permian Triassic Mass Extinction or also called by many the Great Dying. This mass extinction is known as the worst extinction comparing them to the Ordovician, Devonian and the Cretaceous Extinction. Some individuals are not award that the Permian –Triassic are two forming boundary between the end of the Permian and the beginning of the Triassic period. The Permian-Triassic Extinction almost…

history there have been five Mass Extinctions, a global event where at least 75% of the life on Earth dies. In most of these events the only life form to survive are bacteria, or other small organisms that can hide from the destructive force that wipes out everything else. The Cretaceous-Tertiary (K/T) is the most recent and most famous Mass Extinction, taking place 65 million years ago. The K/T is the event in which the dinosaurs died in. The cause of this event is debated, however it is widely…

that during life on Earth there has been 5 mass extinctions. These mass extinctions are said to be a normal part  of life and might even be an important factor for life on Earth. The main mass extinctions that have been discovered are the Ordovician Mass Extinction, the Devonian, Permian, Triassic, and the Cretaceous Mass Extinction. Scientists now even believe that we are not only part of the problem but the main subjects of the sixth mass extinction caused by Homo sapiens (humans). Andrew…

Aleechia Gill 09/29/16 RFJ 5 Mass extinctions are a number of events in which a large percentage of the species on the planet go extinct and have a great impact on today’s living things. There have been at least five mass extinctions recorded in the history of the Earth thus far. The earth lost more than 75 percent of its species. It is being debated that we are currently in the sixth mass extinction. Graptolites, it began with the filtered-fed animals and colony builders, which disappeared…

Almost 4.5 billion years ago, the Earth, newly formed, had possibly the hottest climate in the planet’s extensive past. Temperatures were scorching, enough to liquefy rocks. As radioactive elements located in Earth’s core decay, they generate heat and pressure shoving molten rock toward Earth’s surface. Along with bringing molten rock to the surface, volcanoes also released heat and emitted carbon dioxide into the atmosphere, initiating the greenhouse effect which leads on to global warming.…

Earth, mass extinctions of unimaginable death scale almost wiped out most of the life on the planet. The last event occurred 65 million years ago when Earth was impacted by an asteroid killing the dinosaurs and other organisms (70 per cent of the species). The deadliest of these extinction events happened more than 252 million years ago. The event is known as the Permian-Triassic Extinction Event or the “Great Dying” that killed around 90 per cent of all species on Earth. This event was caused…