About This Chapter
How it works:
- Begin your assignment or other GED science work.
- Identify the ecology concepts that you're stuck on.
- Find fun videos on the topics you need to understand.
- Press play, watch and learn!
- Complete the quizzes to test your understanding.
- As needed, submit a question to one of our instructors for personalized support.
Who's it for?
This chapter of our GED science tutoring solution will benefit any student who is trying to learn ecology and earn better grades. This resource can help students including those who:
- Struggle with understanding ecosystems, food chains, conservation biology, biomes, populations, nitrogen cycle, carbon cycle, fossil fuels or any other ecology topic
- Have limited time for studying
- Want a cost effective way to supplement their science learning
- Prefer learning science visually
- Find themselves failing or close to failing their ecology unit
- Cope with ADD or ADHD
- Want to get ahead in GED science
- Don't have access to their science teacher outside of class
Why it works:
- Engaging Tutors: We make learning ecology simple and fun.
- Cost Efficient: For less than 20% of the cost of a private tutor, you'll have unlimited access 24/7.
- Consistent High Quality: Unlike a live GED science tutor, these video lessons are thoroughly reviewed.
- Convenient: Imagine a tutor as portable as your laptop, tablet or smartphone. Learn ecology on the go!
- Learn at Your Pace: You can pause and rewatch lessons as often as you'd like, until you master the material.
- Become familiar with the levels of ecology.
- Take a look at the habitats and ecological niches within ecosystems.
- Explain how energy flows within an ecosystem.
- Describe the factors that influence predator/prey interactions.
- Examine the different types of symbiotic relationship.
- Understand the significance of a population's carrying capacity.
- Discuss the goals of conservation biology.
- Explain how invasive and introduced species can alter ecological balance.
- Become familiar with the different types of biomes.
- Understand the nitrogen, phosphorus and carbon cycles.
- Describe how humans impact the environment.
1. The Environment, Levels of Ecology and Ecosystems
Do you know the difference between an environment and an ecosystem? In this lesson, you'll find out what makes an environment, and what makes an ecosystem. You'll also learn what ecology is and some of the ways that scientists study ecology using organisms, populations, communities, ecosystems and even the entire biosphere.
2. Ecosystems, Habitats and Ecological Niches
Check out this video lesson to understand the many complex aspects of an ecosystem. See how animals live in habitats and survive amongst their surroundings.
3. Food Chains, Trophic Levels and Energy Flow in an Ecosystem
In this lesson, you'll learn about food chains, food webs, and the different roles that organisms play in an ecosystem. You'll also learn about how energy flows through an ecosystem.
4. Interspecific Competition, Competitive Exclusion & Niche Differentiation
What happens when two similar species that consume the same resources occupy the same space? Interspecific competition, that's what! Watch our video lesson to learn about the outcomes of this ecological battle.
5. Predator/Prey Interactions, Camouflage, Mimicry & Warning Coloration
You probably know that skunks can be quite stinky, bees sting and monarch butterflies are pretty, but do you know why? This lesson will introduce you to the reasons why some animals look or act the way they do and how these things relate to the predator/prey relationship.
6. Symbiotic Relationships: Mutualism, Commensalism & Parasitism
If your cat or dog has ever had fleas, you've witnessed symbiosis in action. In this lesson, learn the many types of symbiosis in biology, and how these relationships can have a positive, negative, or neutral effect on the individual species.
7. Populations: Density, Survivorship and Life Histories
Have you ever wondered how biologists determine the populations of animals in a particular geographic area? Watch this video lesson to find out, and discover how scientists look at the survivorship and life histories of many different species.
8. Carrying Capacity, Migration & Dispersion
Have you ever wondered why some types of birds fly south in the winter or why some animals form territories? Watch this video to learn about a species' maximum growth capabilities, the way its members group themselves and why they might migrate to new locations every year.
9. Dispersal, Colonization, and Island Biogeography
Have you ever gone in your backyard and discovered a wild raspberry bush that has never been there before? How did it get there? Why is there only one bush year after year? In this lesson, you'll study how plant and animal species colonize in new areas through dispersal and immigration and how some species thrive in a new area while others fail.
10. Conservation Biology, Habitat Fragmentation, and Metapopulations
It's becoming harder to conserve large, unbroken tracts of wilderness. Is there another way for conservation biologists to ensure the survival of a species? In this lesson, you'll learn about habitat fragmentation and metapopulations.
11. Ecological Succession: From Pioneer to Climax Communities
Just as people grow and change so, too, do ecosystems. Watch this lesson to learn about ecological succession from the beginning stages of development to a community's ultimate destination, or climax.
12. How Introduced and Invasive Species Alter Ecological Balance
What happens to your block when a new neighbor moves in? Something changes, right? Now think about that on an ecological scale: what happens to an environment when a new SPECIES moves in?
13. Biomes: Desert, Tropical Rainforest, Savanna, Coral Reefs & More
Take a trip around the world and learn all about different biomes. Why can you only find certain plants and animals in specific places? What are the most fertile climates on Earth? Watch on to answer these and other questions.
14. Biomes: Tundra, Taiga, Temperate Grassland, and Coastlines
Take a trip with us in this lesson, starting in the Pacific Ocean, traveling across California through the Central Valley and up to the peaks of the Sierra Nevada mountains. We'll learn how oceans, elevation, and people can determine which types of biomes are found in different areas and check out the Earth's most massive and oldest organisms.
15. Biogeochemical Cycling and the Phosphorus Cycle
In this video lesson, we'll take a look at how elements large and small use other elements to grow. This is achieved through cycles. We'll look at macronutrients, trace elements and the biogeochemical and phosphorous cycles.
16. The Nitrogen Cycle, Acid Rain and Fossil Fuels
Do you know the difference between nitrite and nitrate? Do you have any clue how all the nitrogen in the atmosphere becomes usable? If you can't answer these questions, then you need to watch this lesson on the nitrogen cycle.
17. The Carbon Cycle and Long-Term Carbon Storage
All living organisms have a role in the carbon cycle. Do you know you understand how humans, animals and plants use carbon? This lesson will introduce you to the carbon cycle and explain how it functions on a global scale.
18. Fossil Fuels, Greenhouse Gases, and Global Warming
In this video lesson, you'll learn what roles fossil fuels and greenhouse gases play in global warming, as well as what life on Earth can expect due to rising carbon dioxide levels within Earth's atmosphere.
19. Human Impacts on the Environment
The human population continues to grow, but the size of Earth and the resources available for our use are limited. Humans greatly impact the world around them, and our actions can and often do have dramatic and long-lasting consequences.
20. Androecium: Definition & Concept
You have probably heard of pollen before; you might even be allergic to it. But do you know what part of a flower makes pollen? Learn more about the structure of an androecium in this lesson.
21. Cork Cambium: Definition & Concept
Have you ever carved your initials into a tree's bark? Did you ever think about how you were affecting the tree? In this lesson, we'll look at the structure and function of the plant tissue called cork cambium, which is vital to producing the bark that covers a healthy tree.
22. Nitrification: Definition, Cycle & Equation
Plants and animals need nitrogen. The lesson explains the process of turning nitrogen that is unusable by plants into a form of nitrogen that plants can use.
23. Nitrite: Definition, Structure & Formula
Did you know that nitrates from sources such as fertilizers can enter our body and convert to nitrites? Discover what nitrite is, including its structure and formula. Then test your expertise on nitrite by taking a short quiz at the end of this lesson.
24. What is an Ecological Imbalance? - Definition & Explanation
In this lesson, you will learn the definition of ecological imbalance and explore some examples of ecosystems that have shifted to a state of imbalance. Test your new knowledge at the end with a quiz.
25. What Is Ecological Balance? - Definition & Importance
In this lesson, we'll discuss what ecological balance is and how it's important for the function of an ecosystem. We'll also explore some examples of ecological balance.
26. What is Energy Conservation? - Definition, Process & Examples
This lesson will explain what the conservation of energy principle is and why it matters, using some real-life examples of how it works in our day-to-day lives. A short quiz will follow.
27. What Is Environmental Studies? - Definition & Topics
Explore the basics of environmental studies and the unique interdisciplinary methods used to address the most challenging environmental issues. This segment will give you a brief overview of types of problems and the solutions examined within environmental studies.
28. What Is Secondary Succession? - Definition, Examples & Stages
In this lesson we will investigate the process of secondary succession. Learn about where secondary succession happens, why it happens, how it happens, and what it looks like.
29. K-Selected Species: Definition & Examples
In this lesson, we'll examine one category of life history strategy, K-selection. Learn about the major characteristics of K-selection and some species that employ this strategy.
30. Savanna Grasslands Biome: Definition & Examples
The world is composed of many types of biomes. In this lesson we are going to explore the savanna grassland biome. Our goal is to gain an understanding of the biome's characteristics, locations, and inhabitants.
31. What is a Food Chain? - Examples, Overview
Energy is never created nor destroyed, but it can be passed from one organism to another. A food chain shows how this energy flow occurs. This lesson will define what a food chain represents, go through specific examples of food chains, and compare and contrast a food chain with a food web.
32. The Food Web & Ecosystem of Coral Reefs
This lesson covers the food web and ecosystem of coral reefs. We'll learn what a food web is and what coral reefs are and also take a look at a couple of specific examples of coral reef food webs.
33. Characteristics of Savanna Food Webs
In this lesson, we will learn about the savanna and what kind of organisms live there. We will also learn about food webs and where these savanna organisms fit in the food web.
34. Swamp Food Web
Have you ever been to a swamp? In this lesson, you will learn about some of the many plants and animals of the swamp and how they interact. You will also be able to view a visual model of these interactions.
35. The African & Australian Savanna Food Webs
This lesson is on the food webs of the African and Australian savanna. In this lesson, we'll learn what a food web is and why it is important to study them. We will go over what a savanna is, and look at two specific examples of food webs in each savanna.
36. The Boreal Forest Food Web
This lesson is on the boreal forest food web. In this lesson, we will go over what a food web is, what a boreal forest is and where they are located. Then, we will take a look at a specific food web for the boreal forest.
37. The Coniferous Forest Food Web
This lesson is on the coniferous forest food web. In this lesson, we'll go over what a food web is, where coniferous forests are, and what their characteristics are. We'll also go over two specific examples of a coniferous forest food web.
38. The Food Web of the Arctic Ocean
This lesson is on the food web of the Arctic Ocean. In this lesson, we'll go over what a food web is and what type of organisms live in the Arctic Ocean. Then, we'll learn what the specific web for the Arctic Ocean looks like.
39. The Food Web of the Atlantic Ocean
Do you know where organisms of the Atlantic ocean would fit in on a food web? In this lesson you will learn what a food web is and view an example food web containing Atlantic ocean creatures.
40. The Food Web of the Mojave Desert
This lesson describes the food web of the Mojave Desert in the southwest United States. Read on to learn more about what a food web is and to explore the relationships that are part of the Mojave Desert food web.
41. The Food Web of the Pacific Ocean
This lesson is on the food web of the Pacific Ocean. In this lesson, we'll learn what a food web is and what types of food webs are in the Pacific Ocean.
42. The Food Web of the Sahara Desert
This lesson is on the food web of the Sahara Desert. In this lesson, we'll go over what a food web is and how it applies to the Sahara. We'll also review what the Sahara desert is and where it is located, as well as a specific food web for the Sahara.
43. The Food Web of the Sonoran Desert
Do you how organisms of the Sonoran desert would fit in on a food web? In this lesson, you will learn what a food web is and view an example food web containing Sonoran desert creatures.
44. The Freshwater Food Web & Ecosystem
What do you know about the freshwater ecosystem? In this lesson, you will learn about the freshwater ecosystem. You will also learn some of the feeding interactions that occur between organisms in this environment.
45. The Grassland Food Web: Temperate, African & Tropical
Have you ever heard of a grassland before? Did you know that there is more than one type of grassland? In this lesson, you will learn some specifics about different types of grasslands and the interactions between the organisms that inhabit them.
46. The Kelp Forest Food Web
This lesson is on the kelp forest food web. In this lesson, we'll learn what kelp is and where kelp forests are located. We'll also cover some food web basics and learn about the food web for one kelp forest.
47. The Soil Food Web
Did you ever think about the organisms that live under your feet? In this lesson, you will learn about the soil ecosystem and some of the organisms that are a part of it. You will also view an example of a soil food web.
48. The Temperate Deciduous Forest Food Web
This lesson is on the food web of the temperate deciduous forest. In this lesson, we'll go over what a food web is and how it applies to the deciduous forest. Before we look at a specific food web, we'll also review what a temperature deciduous food web is and where it is located.
49. The Tropical Rainforest Food Web
The food webs in any type of forest include some diverse characters, but as you might guess, tropical rain forests are particularly complex. Here, you will learn about the trophic levels and food webs in tropical rain forests.
50. The Energy Pyramid of a Tropical Rainforest
What do you know about energy pyramids and the tropical rainforest? In this lesson, you will learn what an energy pyramid is as well as what the energy pyramid of a tropical rainforest looks like.
51. What Is Biotic Potential? - Definition & Examples
What does the term 'biotic potential' mean? What are the factors that contribute to calculating and comparing the biotic potential of one organism to that of another? In this lesson you will learn the definition of this term as well as some of the ecological phenomena that surround it.
52. What Is Succession in Biology? - Definition & Examples
This lesson covers succession in biology. You'll learn the difference between primary and secondary succession and look at some specific examples of succession in different ecosystems.
53. Three Types of Ecological Pyramids: Number, Biomass, & Energy
This lesson is on ecological pyramids. In this lesson, we'll go over what a ecological pyramid based on numbers, biomass, and energy looks like and give examples of each.
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