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Many process of homeostasis at the cellular level begin with diffusion. This will help students fully understand the concept.

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This activity introduces the role of diffusion in supplying cells with nutrients and removing wastes.

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This animation takes students through the peppered moth evolution due to the industrial revolution.

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Within the same species, diverse forms can exist. This is the case for moths who, for the majority, have a bright formation and less frequently, a dark formation. During the day, these moths stay motionless on the trunk of birch trees, where the colour is brighter. Thus, the white moths camoflauge themselves with the trunk and have a decreased chance of being spotted and eaten by birds.

During the industrialisation of cities in the 19th century, the pollution produced by human activities promoted a change in the colour of the birch tree trunks. On the darker tree trunks, the white moths are much more visible than the black moths and are eaten by predators. Therefore, little by little through generations, the proportion of white moths has decreased in favour of the black moths. These moths survive much longer and thus have a greater chance to reproduce.

This is a case of natural selection. The form that has adapted the best to the new conditions in the living space is at an advantage.

In this case, it is Man who is responsible for the modification of the environment.

Understand that modifications to the environment are what results in the selection of individuals that are better adapted and that human activities have an influence on biodiversity.

Discuss biodiversity at the genetic level.

Explain genetic drift and natural selection.

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Within the same species, diverse forms can exist. This is the case for moths who, for the majority, have a bright formation and less frequently, a dark formation. During the day, these moths stay motionless on the trunk of birch trees, where the colour is brighter.

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This interactive lets students create food webs on their own. Great supplemental piece of curriculum.

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A food chain is an organized series of living things linked together by an alimentary (food related) relationship. Animals draw the energy needed for survival from their food.

At the base of such a chain one finds the producers. These are terrestrial plants or aquatic ones (algae, phytoplankton). They make their own organic matter from nutrients, CO ₂, and light (photosynthesis).

The animals situated one step up on the chain are the first level consumers: the herbivores. They are the prey of the second level consumers: the carnivores.

A carnivore that doesn't have any predators is called an apex predator. These are situated at the top of the chain.

An arrow stands for "...is eaten by...". A food chain is made up of links that can also be part of other chains. They are branches of a vast alimentary network.

This animation omits the role of decomposers. These are organisms and microorganisms that degrade dead organic matter (wastes, dead plants and animals). They provide the larger part of the nutrients that are recycled by the producers.

Draw an arrow between 2 images meaning "... is eaten by ...".
There are 25 arrows to be placed to complete the game. Once completed, you will be requested to drag the images in their appropriate category (producer, consumer,...).

To classify organisms according to their role in a food chain: producers, herbivores, carnivores, apex predators.

To teach the interdependence among all of the organisms inside an ecosystem.

To mention that many chains exist within the same ecosystem. A food chain is a branch of an alimentary network.

To approach the notions of trophic network and food web.

To approach the notions of predator and prey.

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A food chain is an organized series of living things linked together by an alimentary (food related) relationship. Animals draw the energy needed for survival from their food. At the base of such a chain one finds the producers. These are terrestrial plants or aquatic ones (algae, phytoplankton).

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Fennec foxes are amazing creatures with extraordinary ears. Why are the foxes ears so big? Homeostasis!

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Fennec foxes have huge ears not just for hearing, but also to regulate their body temperature.

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The complicated relationship of Coral and Algae

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The complicated relationship of Coral and Algae

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This video shows how coral and algae have an interesting relationship that can work as coevolution of the two species.

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Coral and Algae Relationship Status: It's Complicated - Science On a Sphere

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Tiny algae called "zooxanthellae" live inside some coral and feed it sugars through photosynthesis in exchange they are protected by coral from the open ocean.

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This video shows the bioluminescence of the deep sea

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Phytoplankton are the primary producer for the ocean food web. Though they are tiny they have a huge impact on the ecosystem. Notice where different sized phytoplankton occupy different waters-mostly based on temperature.

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The Ocean is Glowing with Microorganisms - Science On a Sphere

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Phytoplankton are the primary producer for the ocean food web. Though they are tiny they have a huge impact on the ecosystem. Notice where different sized phytoplankton occupy different waters-mostly based on temperature.

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This interactive helps to show how neurons work to help with all body movements and can link to homeostatic processes.

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Stimulate a neuron and monitor what happens. Pause, rewind, and move forward in time in order to observe the ions as they move across the neuron membrane.

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Simulation with rabbits, food type, and predator. Students can choose a couple different traits and some mutations to be added to the population.

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Explore how organisms with different traits survive various selection agents within the environment.

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This interactive shows how human interactions are affecting the climate in specifically polar regions

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Something big is happening to Earth's climate, and the polar regions hold the key to understanding it. Join top scientists on the hunt for clues that tell a surprising story about our planet's past...and preview where we might be headed.

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Join scientists on a quest to discover what Earth's climate was like in the past - and where we might be headed.

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Coywolves are a predator and keystone species and this video will demonstrate how important they are to an ecosystem.

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Coywolves and the Importance of Keystone Predators | Mountain Lake Journal | PBS LearningMedia

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Follow along as we visit the Adirondack Wildlife Refuge and learn about coywolves and the value of wolves and coyotes as keystone predators. Students will learn about the genesis of coywolves and the importance of keystone species such as wolves and coyotes.

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Biological susceptibility to opioid addiction

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Biological susceptibility to opioid addiction

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This video explains how organisms are biological susceptible to opioid addictions and how they occur.

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Our Biological Susceptibility to Opioid Addiction | Addiction | PBS LearningMedia

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Learn how biological feedback mechanisms contribute to people’s susceptibility to opioid addiction and other substance use disorders in this video from NOVA: Addiction. Use this resource to explore the effects of altering the reward pathway in the brain—controlled by a chemical messenger called dopa…

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Video of Galapagos Finch Evolution

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Description: When Darwin visited the Galapagos Island he collected a number of bird species that he brought back to England. He presented them to ornithologist John Gould thinking they were a variety of birds and he was told that they were all different varieties of finches. This led Darwin to speculate that a population of finches had arrived on the islands and had adapted to different climates through natural selection. However Darwin was never able to observe evolution taking place. Researchers Peter and Rosemary Grant have been observing evolution of Galapagos finches for the last 40 years. One of the most famous studies involved the change in beak depth of medium ground finches during times of drought. Birds that had small beaks were unable to open the dry seeds causing microevolution in the surviving birds.

Web Resources: Peter and Rosemary Grant Research - Wikipedia, The Beak of the Finch - HHMI

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Galapagos Finch Evolution - The Wonder of Science

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Description: When Darwin visited the Galapagos Island he collected a number of bird species that he brought back to England. He presented them to ornithologist John Gould thinking they were a variety of birds and he was told that they were all different varieties of finches. This led Darw

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Quick video about how whales used to walk on land.

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When Whales Walked | Eons | PBS LearningMedia

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We know whales as graceful giants bound to the sea. But what if we told you there was actually a time when whales could walk?

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Description: The cordyceps fungi has a fascinating life cycle. Spores from the fungi are ingested my an insect (like an ant). The fungi takes over the insect causing it to climb to a high branch and hold tight with its mandibles. A fruiting body then emerges from the head of the insect and spreads more spores that infect more insects. Different species of cordyceps infect different species of insects. This phenomenon can be used to introduce the diverse and unique life cycles found in organisms.

Web Resource: Cordyceps Fungi - Wikipedia

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Description: The cordyceps fungi has a fascinating life cycle. Spores from the fungi are ingested my an insect (like an ant). The fungi takes over the insect causing it to climb to a high branch and hold tight with its mandibles.

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Description: This is an excellent phenomenon that can be used in many different units. According to researchers only young sunflowers will follow the Sun. These flowers are following a natural circadian rhythm to receive the most light for photosynthesis. However when they mature the flowers will mainly face east. The reason for this is fairly simple, bees like warm flowers, and the flowers facing the east are the warmest.

Web Resources: The Mystery Of Why Sunflowers Turn To Follow The Sun - Solved - NPR, Helianthus - Wikipedia

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Why Do Sunflowers Follow the Sun? - The Wonder of Science

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Description: This is an excellent phenomenon that can be used in many different units. According to researchers only young sunflowers will follow the Sun. These flowers are following a natural circadian rhythm to receive the most light for photosynthesis. However when they mature the flow