extinct Trilobites died Brachiopods died Graptolites died An ice age was blamed for this mass extinction They think climate change was the cause for this Fall in sea level Messed up the chemistry of the oceans 443 Mya End of Ordovician period Start of Silurian period Late Devonian mass extinction 3 quarters of all species went extinct Reefs got a hard hit Much of the sea bed became devoid of oxygen Nothing could be near the sea bed except for bacteria Could of been multiple extinction over several
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words 20 minutes Reasons why your period may be irregular Your period is not always predictable. Some women have their menstrual cycle every 28 days‚ whereas others may have longer cycles‚ or no cycle at all. It isn’t always a problem‚ but sometimes‚ it can lead to a diagnosis How do I know mine is irregular? Irregular periods are defined as cycles that are more frequent than every 21 days‚ or last longer than 8 days. You may also be irregular if your period is missed‚ early‚ or late. TO count
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Music in the Baroque Period Music is in everyone’s lives these days. You always see people with headphones in their ears or jamming out in their cars. Many people listen to music in the privacy of their homes‚ where they can listen to music as loud as they want and can sing along and not have anyone look at them funny. But do all these people who listen to music on a daily basis really know where it came from? A lot of people will say that Michael Jackson is the king of pop or that Elvis was the
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Hellenistic Period The Hellenistic Period was a new cultural age influence by Alexander the Great. It started after the death of Alexander and ended with the rise of Roman domination. After the death of Alexander the Great‚ his empire split up into smaller kingdoms and the Romans began to gain power. During this period‚ Greek ideas and culture was spread‚ hence the name Hellenic meaning Greek. Greek culture expanded from modest‚ localized city-states to large‚ open communities. The art in this period pushed
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Anqi Zhang Heian Period Introduction In Japanese concept‚ the Heian period means the peaceful and auspicious period. During Heian period‚ the overall cultural level in Japan had achieved a remarkable progress. The progress is mainly reflected in three major important characteristics: clothing‚ religion of aristocracy‚ and relations among women. Clothing Clothing is one of the most important factors to reflect the characteristics of the Heian period. Besides showing the beauty‚ clothing is also a
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This essay will briefly discuss the notion of ‘sensitive periods in development‚’ as introduced by Hugo de Vries and researched by Maria Montessori. It will further list Montessori’s explanation of the sensitive periods and their importance in a child between the ages of 0 and 6 years. Two examples will be discussed through personal reflection to demonstrate the author’s understanding of these periods. Many theorists such as Piaget‚ Vygotsky‚ Freud and Erikson have examined the idea that every
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A refractory period is a period of time where the cells are resistant to depolarisation. There are 3 different refractory periods‚ firstly the absolute refractory period which is the part of the cardiac cycle where no further depolarisation can take place. Secondly it is the relative refractory period where depolarisation of the cells can occur but only if the stimulus is strong enough‚ and finally there is the diminished refractory period where the cells are still resistant to depolarisation but
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as can be seen with Japan. It thrived while being isolated from the rest of the world for over two hundred years before it opened its ports again. It is important to understand the context behind Japan’s isolation starting in the Sengoku period. This time period was also known as the “Age of Warring States‚” in which landowners or daimyos fought each other for power (Dobbs). It was chaotic‚ with everyone fighting to own the most land. It wasn’t until three men‚ Oda Nobunaga‚ Toyotomi Hideyoshi‚
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Group ACTIVITY “BIOTECHNOLOGY EVERYWHERE YOU LOOK” STATION 1 : Time Period = B.C. 1. Would you consider the Ancient Egyptians to be Biotechnologists? Why? Why not? 2. How do you think yeast causes bread to rise? 3. What do you think the Latin root “bio” means? Define the word “technology”. STATION 2: Time Period = 1 A.D.-1900 A.D. 1. List one characteristic or desirable trait that may have been “bred” for in the following:
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The Post Modernism period just came after the Modern period but it is not clear or impossible to be said when it came. In other words the modern Period was the time when the world was recovered from World War 2‚ which started globalization. The Post Modernism is a concept that arrived an era of academic study about in the mid-1980s. There is a variety of concepts‚ architecture‚ music‚ literature‚ fashion‚ art‚ film etc. In the 1980’s the political climate changed. During that time Post Modernism
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