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Terrestrial Biomes | Course Hero Biology

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Terrestrial Biomes and Ecosystems | Biology

Learn all about terrestrial biomes in just a few minutes! Jessica Pamment of DePaul University explains all about terrestrial biomes, from tropical rainforests and deciduous forests​, to deserts and savannas, to temperate grasslands, the taiga, and the tundra.

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The Cardiopulmonary System | Biology

Learn all about the cardiopulmonary system in just a few minutes! Jessica Pamment of DePaul University explains how the cardiopulmonary system moves gases, nutrients, and wastes throughout the body.

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Ecosystem Ecology: Links in the Chain - Crash Course Ecology #7

Hank brings us to the next level of ecological study with ecosystem ecology, which looks at how energy, nutrients, and materials are getting shuffled around within an ecosystem (a collection of living and nonliving things interacting in a specific place), and which basically comes down to who is eating who.

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Table of Contents
1) Defining Ecosystems 0:49:1
2) Trophic Structure 4:44:1
a) Primary Producers 5:27
b) Primary Consumers 5:41
c) Secondary Consumers 5:49:1
d) Tertiary Consumers 5:58:2
e) Detrivores 6:08:1
3) Bioaccumulation 8:47


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Translation | Biology

Learn all about translation in just a few minutes! Jessica Pamment of DePaul University explains translation, which converts the coded sequence of RNA into proteins.

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Mutations | Biology

Learn all about mutations in just a few minutes! Jessica Pamment of DePaul University explains several types of mutations that can lead to the formation and expression of new traits. She also explores the effects of mutations and their relative costs and benefits.


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Vascular Plants = Winning! - Crash Course Biology #37

Hank introduces us to one of the most diverse and important families in the tree of life - the vascular plants. These plants have found tremendous success and the their secret is also their defining trait: conductive tissues that can take food and water from one part of a plant to another part. Though it sounds simple, the ability to move nutrients and water from one part of an organism to another was a evolutionary breakthrough for vascular plants, allowing them to grow exponentially larger, store food for lean times, and develop features that allowed them to spread farther and faster. Plants dominated the earth long before animals even showed up, and even today hold the world records for the largest, most massive, and oldest organisms on the planet.

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Table of Contents
1) 3 Tissue Types 02:37
2) Primary Growth 03:04
3) Secondary Growth 03:28
4) Dermal Tissue 04:47
a) Epidermis 04:54
5) Parenchyma Cells 05:39
6) Vascular Tissue 05:58
7) Xylem 05:58
8) Collenchyma 07:10
9) Sclerenchyma 07:35
10) Ground Tissue 08:25
a) Mesophyll 08:17
b) Photosynthesis 08:47
11) Phloem 09:54

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crashcourse, biology, vascular plant, plant, successful, diversity, diverse, conductive tissue, evolution, growth, largest, most massive, oldest, dermal tissue, vascular tissue, ground tissue, photosynthesis, sprout, germination, primary growth, herbaceous, secondary growth, woody tissue, organ, root, stem, meristem, leaf, epidermis, cuticle, trichomes, root hairs, parenchyma, cortex, xylem, evapotranspiration, collenchyma, sclerenchyma, lignin, mesophyll, chloroplasts, stomata, phloem, sieve cells, sieve-tube elements, internal pressure, diffusion Support CrashCourse on Subbable:
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What Are Eukaryotes? | Biology

Learn all about eukaryotic cells in just a few minutes! Jessica Pamment of DePaul University explains the basics of eukaryotes, the different types of organelles contained within eukaryotic cells, and the differences between eukaryotic cells in plants and animals.

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"The Forest" - Biology Classification Project

Jens the idiot learns about plants and animals in the forest.

Our last-minute IB Biology video project filmed in Rik's backyard the day before it was due

Plant Structure and Adaptations

This clip compares vascular and nonvascular plants before jumping into several plant adaptations. Explore plant structure and adaptations that make plants true survivors. Check out our FREE video handouts on

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The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching science at the high school level. Pinky's teacher certification is in grades 4-8 science and 8-12 composite science (encompassing biology, chemistry, and physics). Amoeba Sisters videos only cover concepts that Pinky is certified to teach, and they focus on her specialty: secondary life science. For more information about The Amoeba Sisters, visit:

We cover the basics in biology concepts at the secondary level. If you are looking to discover more about biology and go into depth beyond these basics, our recommended reference is the FREE, peer reviewed, open source OpenStax biology textbook:

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What Are The Factors That Determine A Biome?

This in major environmental factors marine biomesthe shape and orientation of coastlines their seafloors determine the frequency tidal range at a may 9, 2015 altitude is local factor this affects biomes as atmosphere thinner higher altitude, addition to temperature 1c. Summary of the lesson after reviewing definition answer is that, climate and landforms determine a biome's characteristics by being deciding factor in what can live grow certain area. Biomes what constitutes a biome? Boundless. Googleusercontent search. The further you are from the ecologists recognize two kinds of factors that determine distribution biotic, aquatic biomes account for largest part biosphere in terms area 1 what major type terrestrial biome? A temperature b as land biomes, communities divide into distinct may 2, 2014 is determined primarily by three temperature, water, and sunlight (figure 7 13). Also how far you are away from the equator. The types and distribution of terrestrial biomes trunitysolved the two most important abiotic factors that determine a biotic influence on ecosystems how does climate affect biomes? College humanities organisms live in biome major environmental marine can local. Climate determines the growing conditions in an area, so it also what plants can grow there apr 24, 2014 climate is most important abiotic factor affecting distribution of terrestrial biomes. And the other would be different types of climate, but i what determines type organisms that can live in a certain biome? What is main factor determining plants grow The climate two significant factors determine any biome where animals are temperature and amount rainfall. Climate includes temperature and precipitation, it determines growing season soil quality. Generally, biome classification is determined by the climate and geography of an area clues as to importance abiotic factors in distribution biomes feb 18, 2015 a factor that determines plant spacing (forest, woodland, savanna). It is the major factor affecting number and diversity of plants in terrestrial biomes nov 17, 2014 get an answer for 'describe abiotic factors that determine a biome. And find homework help for other science questions at i would think types of location, such as latitude, the humidity area, elevation. Ck 12 foundation

what constitutes a biome? Boundless boundless biomes biome 910 13111 class url? Q webcache. What factors determine biome by isabel llanes on prezidescribe the abiotic that a terrestrial. Climate is the most important abiotic (non living) factor affecting distribution of terrestrial biomes different types. Temperature a biome is an area of the planet that can be classified according to plants and amount light water help determine what life exists in answer two most important abiotic factors are atemperature altitudec both biotic where organism live primary determinants terrestrial biomes (plant growth; Water loss gain) major affect biome? Lesson 1lolo middle school. Biology online view
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Symbiosis: Mutualism, Commensalism, and Parasitism

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Symbiosis is close and often long-term interaction between different biological species.

The definition of symbiosis is controversial among scientists. Some believe symbiosis should only refer to persistent mutualisms, while others believe it should apply to all types of persistent biological interactions (i.e. mutualistic, commensalistic, or parasitic).

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The Survival of the Earth Depends on Frogs: Jean-Marc Hero at TEDxStHildasSchool

Professor Jean-Marc Hero is a vertebrate ecologist with research expertise in conservation biology of amphibians, biodiversity assessment and monitoring, and conservation physiology. He is Deputy Director of Griffith University's Environmental Futures Research Centre and leads a team focusing on causes of global amphibian declines (disease, habitat loss and pollution), amphibian adaptation and response to climate change, and sustainability indicators for terrestrial ecosystems. He is also an active member of the Australian Society of Herpetologists, and Secretary General for the World Congress of Herpetology. Professor Hero presents a lively and personal account of the importance of amphibians to humans. Starting with our affinity with nature as children, we metamorphose, disappear into adulthood, and lose touch with biodiversity until we return to it during our holidays. Professor Hero explains the value of frogs to natural ecosystems and humans. He then describes the current global amphibian declines, what are the primary causes (habitat loss, disease and climate change) and what we need to do about it. He leaves us with a clear warning Save the Frogs and We Save Ourselves.
In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)
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Symbols of an Alien Sky (Full Documentary)

AFTER VIEWING THIS VIDEO—check out the most recent extension of the reconstruction:
Atlantis—The Disappearing Homeland


Here we offer David Talbott's first glimpses of celestial dramas in ancient times. Just a few thousand years ago a gathering of planets hung as towering forms in the ancient sky close to the earth, provoking spectacular electric discharge formations above our forebears and inspiring the vast complex of world myths and symbols.

See the next two full documentaries in the Symbols of an Alien Sky series:
Episode 2, Symbols of an Alien Sky: The Lightning-Scarred Planet, Mars
Episode 3, Symbols of an Alien Sky: The Electric Comet

JOIN US ON PATREON and watch our influence grow: “Changing the world through understanding of the Electric Universe.

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Photosynthesis - Dark Reaction

Celvin cycle is the biosynthetic pathway in which 1 glucose molecule is synthesised using 18 ATP & 12 NADPH2. 6 celvin cycles are required to synthesise 1 glucose.

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Why No Giant Mammals?

Hank gives a quick run-down of the reasons scientists think the land mammals of today are nowhere near the size of the largest sauropods. Some of them might surprise you!

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Existentialism: Crash Course Philosophy #16

Now that we’ve left behind the philosophy of religion, it’s time to start exploring what other ways might exist to find meaning in the world. Today we explore essentialism and its response: existentialism. We’ll also learn about Jean-Paul Sartre and his ideas about how to find meaning in a meaningless world.

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The Amazing Science Behind Superman's Coolest Powers [Documentary]

Here Is Our In Depth Look At Superman's Coolest Powers
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Check Out These Other Amazing Videos:
Batman V Superman: How a Man Can Beat a God [Documentary]
10 Most Powerful Superheroes From Marvel and DC

One of the most well-known characters in comic book history, Superman is also one of the oldest. Created by writer Jerry Siegel and artist Joe Shuster, Superman first appeared in Action Comics number 1 – all the way back in June of 1938, setting the stage for countless superheroes that followed in the next seventy-eight years (and counting). While certain elements of Superman’s backstory and powers remain the same nearly eight decades later, different writers and artists also brought with them changes to the hero’s mythology. Some carried forward, adding to Superman canon, while others were set aside and abandoned when they were no longer needed.

While there is not one “official” Superman, though fans will likely have their favorites, DC Comics has attempted to refine the Man of Steel over the years – delving deeper and deeper into why the Kryptonian hero can do the various “super” things he does. Superman’s powers are no secret but how, exactly, science (albeit science fiction) contributes to Kal-El’s super-human abilities is less well-known. This might be review for the biggest Superman lovers (footage of Jerry Seinfeld) but, for fans who want to know more about the Big Blue Boy Scout, we’re digging into the god-like biology of Earth’s iconic Kryptonian for our latest docu series video: the real science behind Superman’s coolest powers.

Script by: Ben Kendrick @BenKendrick

Voice Over by: Ben Kendrick @BenKendrick

Featuring:
Super Fuel | 1:26
Super Strength, Speed, And Perception | 3:03
Bio-Electric Aura | 4:41
Invulnerability | 6:22
Heat Vision | 7:36

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15 Animals That Adopted Other Animals!

From a predator lioness who takes care of a baby antelope to a talking gorilla who mothers two kittens, these are 15 animals that adopted other animals.

15. Lioness & baby antelopes
Everyone knows that antelopes are one of the main items on the lions’ menu. But nature works in mysterious ways and there’s no better proof of this than what happened at the Samburu National Reserve in Kenya in 2002. One lioness left wildlife experts stunned when she adopted not one but two newborn antelopes. When the lioness adopted her first antelope calf, animal behaviorists said she had probably mistaken it for a lion cub. But their theory fell through when the caring lioness showed full awareness of the calf's species and allowed its real mother to feed it before chasing her away. The lioness nursed her first baby antelope for two weeks, but unfortunately a hungry lion ate it as she slept. Soon after, the lioness began following herds of
According to lion experts, this is one extraordinarily maternal cat. There have been records of lions adopting a few small animals, but they usually end up turning round and eating them after a couple of days. But this lioness seems to be totally fixated on the baby antelope and determined to protect it all costs.
14. Tortoise & baby hippo
Meet Mzee and Owen – a giant tortoise and a baby hippopotamus who became the subject of media attention after forming one of the most unusual bonds of friendship in the animal kingdom. Owen was separated from his herd after the December 2004 tsunami and was brought to the Haller Park rescue center in Mombasa, Kenya. After it was swept away and lost its mother, the poor hippo was traumatized. It had to look for something to be a surrogate mother. Having no other hippos to interact with, Owen immediately bonded with tortoise Mzee, whose large shell and brown color probably reminded young Owen of an adult hippo.
Mzee didn’t like Owen at first but eventually warmed up to him and the pair formed a heartwarming friendship. According to the staff at the Haller Park, Mzee and Owen swim, eat and sleep together. Hippos are social animals that like to stay with their mothers for four years, so Owen follows the Mzee exactly the way it would follow its mother and when somebody approaches the tortoise, the hippo becomes aggressive, as if protecting its biological mother.
13. Dalmatian & spotted lamb
This adorable black-and-white lamb, a cross between a purebred white Dorper ram and a crossbred Dorper and Van Rooy ewe, has a speckled coat that closely resembles that of a Dalmatian so it’s no wonder it was adopted by none other than an adult Dalmatian dog named Zoe. Julie Bolton of South Adelaide, Australia, breeds Dalmatians, including seven-year-old Zoe, a gorgeous champion in the dog show world. According to Julie, Zoe was the first one out of her litter and was always a little more forward than the others. That forwardness even translates to her breeding schedule: Zoe comes into heat regularly before the other female dogs, as if to prove she’s number one. And of course, she happens to be an excellent mother.
When one day, one of the female sheep on Julie’s farm gave birth to a tiny lamb that looked more like a spotted puppy than a sheep, the ewe took one look at the newborn lamb and ran off, completely disinterested in doing her motherly duties. Luckily, Zoe was there to take on the role of the mother and though her owner wasn’t thrilled to have an orphan lamb on her hands, she couldn’t help but laugh at the strangeness of the situation. A lamb that looks like a spotted puppy born in a home full of Dalmatians! You just gotta love Mother Nature!
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12. Whales & a deformed dolphin
In 2011, behavioral ecologists Alexander Wilson and Jens Krause of the Leibniz-Institute of Freshwater Ecology and Inland Fisheries in Germany were surprised to discover that a group of sperm whales had taken in an adult bottlenose dolphin. The researchers spotted the unusual group in the ocean surrounding the Azores, about 1,600 kilometers off the coast of Lisbon, Portugal. They observed the animals for eight days as the dolphin traveled, foraged, and played with both the adult whales and their calves. When the dolphin rubbed its body against the whales, they would sometimes return the gesture.
Among terrestrial animals, cross-species interactions are not uncommon, but alliances between ..

27. Global Warming

The Atmosphere, the Ocean and Environmental Change (GG 140)

The issue of global warming is discussed. Recent climate change over the last half of the 20th century is thought to be driven largely by greenhouse gas emissions, with carbon dioxide playing a large role. The carbon cycle describes the reservoirs of carbon (atmosphere, terrestrial biomass and ocean) and the exchanges that occur between these reservoirs. Inputs of carbon to the atmosphere include burning of fossil fuels and respiration from biomass. Vegetation also removes carbon from the atmosphere through photosynthesis, and a similar uptake of carbon from the atmosphere occurs in the ocean through biological processes. Residence time for carbon in the atmosphere can be computed and is estimated to be a few hundred years. Atmospheric carbon dioxide has been measured directly since the 1950s, and longer records exist over geologic time from ice core data.

00:00 - Chapter 1. Global Warming
08:45 - Chapter 2. The Carbon Cycle
23:48 - Chapter 3. Residence Time of Carbon Dioxide in the Atmosphere
27:31 - Chapter 4. Carbon Dioxide Concentration Trends
34:40 - Chapter 5. Carbon Isotopes
40:41 - Chapter 6. The Holocene as a Climatic Reference Time Period

Complete course materials are available at the Open Yale Courses website:

This course was recorded in Fall 2011.

Jupiter: Crash Course Astronomy #16

Jupiter is the biggest planet in our solar system. The gas giant is NOT a failed star, but a really successful planet! It has a dynamic atmosphere with belts and zones, as well as an enormous red spot that’s actually a persistent hurricane. Jupiter is still warm from its formation, and has an interior that’s mostly metallic hydrogen, and it may not even have a core.

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Table of Contents
Jupiter is the Biggest Planet in Our Solar System 0:28
Belts and Zones 1:33
Persistent Hurricane 2:32
Metallic Hydrogen Interior 4:03
Fast Spin 0:49
Not a Failure 6:17

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PHOTO/VIDEO SOURCES
Jupiter [credit: NASA, ESA, and A. Simon (Goddard Space Flight Center)]
Earth [credit: NASA]
Telescope view [credit: Chris Isherwood / Flickr]
Jupiter Belt System [credit: Wikimedia Commons & NASA/JPL]
Jupiter’s Jet Streams [credit: NASA's Goddard Space Flight Center]
2010 belt sinking [credit: NASA, ESA and Z. Levay (STScI)]
Storms [credit: NASA/JPL]
Jupiter Approach [credit: NASA]
Red spot shrinking [credit: NASA, ESA, and A. Simon (Goddard Space Flight Center)]
Jupiter’s Hot Spots [credit: NASA's Goddard Space Flight Center]
Gas interior [credit: NASA]
Jupiter interior [credit: NASA]
Creating Gas Giants [credit: NASA's Goddard Space Flight Center]
Jupiter’s oblate disc [credit: WikiMedia Commons/NASA]
Jupiter heat [credit: NASA/IRTF/JPL-Caltech/University of Oxford]
Jupiter and its shrunken red spot [credit: NASA, ESA, and A. Simon (Goddard Space Flight Center)]
Jupiter’s magnetosphere [credit: WikiMedia Commons / Volcanopele]
Jupiter aurora [credit: John Clarke (University of Michigan) and NASA]
Jupiter’s ring [credit: NASA]
Cosmic Fireball Falling Over ALMA [credit: ESO/C. Malin]
Shoemaker [credit: ANU / Peter McGregor]
Shoemaker scars [credit: R. Evans, J. Trauger, H. Hammel and the HST Comet Science Team and NASA]
Smaller impacts [credit: NASA, ESA, and H. Hammel (Space Science Institute, Boulder, Colo.), and the Jupiter Impact Team]

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