Professor Dave Explains
Energy Flow and Nutrient Cycling in Autotrophs and Heterotrophs
The biosphere is an extremely dynamic system, with energy flowing from one group of organism to another at all times. How does this flow operate? How do nutrients cycle? What is biomass? What are gross and net primary productivity? Let's...
Curated Video
GCSE Biology - How Human Waste Reduces Biodiversity - Explained #89
We explain what you need to know about how biodiversity suffers as a result of human activity.
Curated Video
GCSE Biology - Biotic and Abiotic Factors #83
An important part of any ecosystem are the biotic (living) and abiotic (non-living) factors. This video explore what each of them are, and how to identify them. To learn more about ecosystems in general check out our other video on...
Curated Video
The Nitrogen Cycle
Dr. Forrester will focus on the nitrogen cycle. She will define and explain how the cycle works.
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Ecosystems
Dr. Forrester defines the term ecosystem and talks about the factors that have a negative effect on them. Dr. Forrester will also discuss measures that can be taken to help preserve our ecosystems.
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The Chesapeake Bay
Dr. Forester explores the Chesapeake Bay ecosystem, identifying key components and threats currently faced.
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Water Ecosystems
Dr. Forrester examines aquatic ecosystems and the impact of temperature, light, fertilization, and acid rain.
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Creating a Water Ecosystem
Dr. Forester creates a water ecosystem and identifies the roles of consumer, producer, and decomposer in the water ecosystem.
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Parts of the Environment
Dr. Forester defines and presents examples of biomes, ecosystems, and habitats.
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How to Fix a Broken Ecosystem
Permaculture instructor Andrew Millison explains the process for repairing a degraded ecosystem. We begin with the metrics for assessing ecosystem health, and then go over the steps to triggering biological activity and ecological...
Ancient Lights Media
The Inner Planets of the Solar System - Volume Two: Earth, Mars and the Asteroid Belt- Solar System Series
This video examines details relating to the planets Earth, Mars and their moons, as well as the Asteroid Belt.
Curated Video
A Poisonous Legacy
Edie Widder, marine biologist at the Ocean Research & Conservation Association, laments the dreadful environmental catastrophe we are leaving for our children without even giving them the tools to deal with it.
Science ABC
Why Is Volcanic Soil So Fertile?
Volcanic soil, belongs to a category of soils known as andisols and is derived from both volcanic lava and volcanic ash, both of which are rich in certain key nutrients, such as iron, calcium, magnesium, sodium, potassium, phosphorous,...
Curated Video
Producers, Consumers, and Decomposers
Producers, Consumers, and Decomposers explains the roles of producers, consumers, and decomposers within an ecosystem.
Curated Video
High Five Facts - Polar Regions
This video explores five fun facts about polar regions.
Curated Video
The Nuclear Disaster of Chernobyl
The Nuclear Disaster of Chernobyl analyzes the nuclear disaster of Ukraine and Chernobyl and the effects on health and society.
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The Process of Photosynthesis
The Process of Photosynthesis explains that the source of energy in ecosystems comes from sunlight by illustrating producers transferring and transforming energy through photosynthesis.
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Learning for Life
Marine biologist Edie Widder at the Ocean Research & Conservation Association describes how an appreciation of our ecosystems enables us to protect ourselves from the risks of environmental degradation.
Curated Video
Effects of Strip Mining
The video “Effects of Strip Mining” examines the process of strip mining, with a specific focus on the negative effects it can have on the environment.
Curated Video
Biodiversity: Natural and Human Causes of Depletion
This video discusses what biodiversity is and its overall importance in ecosystems. The video will also discuss different factors that can decrease biodiversity.
Curated Video
Population Ecology: What Causes Populations to Change?
a video entitled “Population Ecology: What Causes Populations to Change?” which discusses the roles of organisms in a habitat and explores how organisms affect one another and limited resources when interacting.
Curated Video
Human Impacts: How Do People Disrupt Ecosystems?
A video entitled “Human Impacts: How Do People Disrupt Ecosystems?” which examines biodiversity and how humanity and nature can negatively affect ecosystems.
Curated Video
Ecosystems: What If Algae Were Removed from a Pond?
A video entitled “Ecosystems: What If Algae Were Removed from a Pond?” which examines algae as organisms and discusses how one small part of an ecosystem can play a big role.
Curated Video
Adaptation: What Factors Determine Where Animals Live?
“Adaptation: What Factors Determine Where Animals Live?” focuses on the ways that ecosystems force animals to adapt in the face of ecological change and competition for resources.