The Cretaceous-Tertiary extinction event, or the K-T event, is the name given to the die-off of the dinosaurs and other species that took place some 65.5 million years ago. For many years, paleontologists believed this event was caused by climate and geological changes that interrupted the dinosaurs’ food supply. However, in the 1980s, father-and-son scientists Luis (1911-88) and Walter Alvarez (1940-) discovered in the geological record a distinct layer of iridium–an element found in abundance only in space–that corresponds to the precise time the dinosaurs died. This suggests that a comet, asteroid or meteor impact event may have caused the extinction of the dinosaurs. In the 1990s, scientists located the massive Chicxulub Crater at the tip of Mexico’s Yucatán Peninsula, which dates to the period in question.
Dinosaurs roamed the earth for 160 million years until their sudden demise some 65.5 million years ago, in an event now known as the Cretaceous-Tertiary, or K-T, extinction event. (“K” is the abbreviation for Cretaceous, which is associated with the German word “Kreidezeit.”) Besides dinosaurs, many other species of mammals, amphibians and plants died out at the same time. Over the years, paleontologists have proposed several theories for this extensive die-off. One early theory was that small mammals ate dinosaur eggs, thereby reducing the dinosaur population until it became unsustainable. Another theory was that dinosaurs’ bodies became too big to be operated by their small brains. Some scientists believed a great plague decimated the dinosaur population and then spread to the animals that feasted on their carcasses. Starvation was another possibility: Large dinosaurs required vast amounts of food and could have stripped bare all the vegetation in their habitat. But many of these theories are easily dismissed. If dinosaurs’ brains were too small to be adaptive, they would not have flourished for 160 million years. Also, plants do not have brains nor do they suffer from the same diseases as animals, so their simultaneous extinction makes these theories less plausible.
Answer:
portfolio assessments
Explanation:
Portfolio assessments -
It refers to the proper collection of the works of the student , which is given as home work or classwork by the teacher , is referred to as portfolio assessments .
The teachers is asked to collect the work for a period of time , in order to track the improvement of the student in a proper manner .
Hence , from the given scenario of the question ,
The correct answer is portfolio assessments .
In friendly relations, people determine that they have mutual interests or other common ground.
You use mutual to describe something along with an hobby which two or more people share. They do, however, share a mutual hobby in layout.
Commonplace hobby way the proportion of undivided interest in the commonplace elements appurtenant to every unit, as expressed in the assertion, and any targeted percent of the not unusual hobby approach such percent of the undivided pastimes inside the combination.
The court observed that “topics of mutual interest” approach no more than what is of mutual gain or benefit to employers and employees and therefore for the enterprise as a whole.
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The correct answer is agenda control.
Agenda control refers to phenomenon whereby the media (television, newspapers, movies, magazines, etc.) shapes and influences people's thoughts and perceptions of the world. This occurs as a result of over reporting topics such as crime, terrorism, corruption, etc., while under reporting other prevalent occurrences in society. By selectively providing information to consumers, the media influences the public's opinions and perceptions.
Wholesalers that perform the entire range of wholesaler functions are full-service wholesalers.
<h3>What are wholesalers?</h3>
A wholesaler is referring to business channels that purchase goods directly from the manufacturers in lumpsum or bulk quantity and sell them to retailers. The cost of purchasing is low as it is a bulk purchase.
A wholesaler which offers complete services like selling goods along with delivery with the help of transportation and storing stocks in warehouses and taking feedback from the market refers to a full-service wholesaler.
These types of wholesalers take risk in the market and also performs sorting of goods for others like customers and retailers.
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