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Sea otter
Sea otters are mammals because they have fur covering their bodies and whiskers near their noses.
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Sexual dimorphism in animals
Many animals show sexual dimorphism, or differences between the males and females of that species. These are mostly physical differences, but other differences like songs in male and female birds can also be thought of as sexual dimorphism. Generally, males are more decorated and larger than females, but there are several species of animals in which the females are larger than the males.
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Similarities and differences of animals- as observed by their skeletons.
The skeletal system provides support for the body of an animal. The form of an animal's skeleton helps to identify the animal and also provides insight into the behavior and food choices of the animal.
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Shore view of the California rocky intertidal zone
The intertidal zone is found where the tides rise and fall daily, alternatively submerging and exposing the shore to ocean water. Organisms are exposed to periods of varying moisture, sunlight, and wave forces.
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Zebrafish blood cell circulation in vessels
Note that blood flows toward the tail through a dorsal vessel while blood flows toward the head through a ventral vessel (you can see blood flow laterally through developing capillaries).
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The circulatory, digestive, and respiratory systems work together.
The digestive system breaks down the food we eat into smaller nutrients which are moved throughout our bodies by the circulatory system. The respiratory system captures oxygen from the air and releases toxic carbon dioxide to the air; these chemicals are also moved through the body via the circulatory system.
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Pigmented zebrafish showing blood flow
Lateral view of developing Danio showing red blood cells flowing through the beating two-chambered heart.
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5.01. Some Fundamental Principles of Action
<img src="http://mises.org/Controls/Media/DocumentImage.ashx?Id=6513" vspace="4" hspace="4" style="margin: 10px;" /><br />

Brain: The Inside Story's "Your Thinking Brain"
If there is one thing that makes you different from other animals, it is your extraordinary ability to think. Like other thinking species, humans don't just react to the world as it is: We reflect on the past, imagine what could be, and then plan ways to make our thoughts become reality. Our brain's advanced outer layer, or cortex, enables us to remember past events and predict the future consequences of our actions before we make decisions. We can think about thinking, and use language to excha
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Charlestown public housing
Footage of the building which houses the offices of the Boston Housing Authority in Charlestown. Footage of rundown buildings in the Bunker Hill Housing Project in Charlestown. Many of the buildings have boarded up windows or broken windows. Trash is visible along the sidewalks and walkways in front of the buildings. Shots of a series of photographs of a meeting between Joseph Timilty (State Senator) and Jimmy Carter (US President).John Vitagliano (Boston Housing Inspection Commissioner) is inte
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OSU Yoga theory and practice
Footage from yoga theory and practice class taught by Stuart Sarbacker (w/ voiceover).
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Israeli forces bombard Gaza, as Hamas rockets hit Israel
Palestinians report 37 dead including a woman and her child with some 300 wounded as Israeli air strikes pound Gaza. Rough Cut (no reporter narration). Subscribe: http://smarturl.it/reuterssubscribe More updates and breaking news: http://smarturl.it/BreakingNews Reuters tells the world's stories like no one else. As the largest international multimedia news provider, Reuters provides coverage around the globe and across topics including business, financial, national, and international news. Fo
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Pushmobile
In this video from Jakers!, Grandpa Max describes growing up in Brooklyn.
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Mississippi: Pre-Flood Flyover
A slower zoom to the Mississippi river.
Author(s): Darrel Williams,Stuart Snodgrass

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"Topics in Lie Theory: Tensor Categories, Spring 2009"
" This course will give a detailed introduction to the theory of tensor categories and review some of its connections to other subjects (with a focus on representation-theoretic applications). In particular, we will discuss categorifications of such notions from ring theory as: module, morphism of modules, Morita equivalence of rings, commutative ring, the center of a ring, the centralizer of a subring, the double centralizer property, graded ring, etc."
Author(s): Etingof, Pavel

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To Kill a Mockingbird - Vocabulary Quiz
Expand on your vocabulary.
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An Arm and A Leg
Students will design and build a prototype of an artificial limb using a simple syringe system as an introduction to bioengineering. Students will determine which substance water (liquid) or air (gas) will make the appendage more efficient.
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How much do you know about our trees? - Quiz
A general knowledge quiz about native Irish trees by Una Hurley
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07.05.2011 - Langsam gesprochene Nachrichten
Trainieren Sie Ihr Hörverstehen mit authentischen Materialien. Nutzen Sie die Nachrichten der Deutschen Welle von Samstag – als Text und als verständlich gesprochene Audio-Datei.Bundeskanzlerin Angela Merkel hat sich für die Verlängerung der Anti-Terror-Gesetze und für die Vorratsdatenspeicherung ausgesprochen. Ein großer Teil der Vorschriften werde auch in Zukunft gebraucht, um terroristische Anschläge in Deutschland verhindern zu können, sagte sie der "Passauer Neuen Presse". Die Fes
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Outrageous Ooze
Developed for third and fourth grade. Students will be given the opportunity to use mathematics to make their own "outrageous ooze" through measuring cornstarch and water. They will use their senses to hypothesize what element "outrageous ooze" is (solid or liquid). Then, they will use scientific observations and methodology to complete a handout and have a "conclusion discussion" about what the ooze is and how it works. Biology In Elementary Schools is a Saint Michael's College student project
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