About This Chapter
Biomes & Ecosystems - Chapter Summary
When you work through this chapter on biomes and ecosystems, you'll find short videos on topics such as different kinds of biomes, including tundra, savanna and taiga, and the climate and plants in the open ocean biome. Use this chapter to ensure you know how to do the following:
- Outline consumers, decomposers and producers in ecosystems
- Define 'biotic' and offer examples
- Discuss abiotic factors, trophic levels, energy flow and food chains in an ecosystem
- Identify the phosphorus cycle and biogeochemical cycling
- Explain acid rain, fossil fuels and the nitrogen cycle
- Detail the carbon cycle and long-term carbon storage
- Describe human and natural disturbances that can affect an ecosystem
Take your time as you complete the chapter, going back as often as needed to master the material. The videos are easy to navigate using the tags in the timeline. Before taking an exam, you can build your confidence by answering the multiple-choice questions on the lesson quizzes and chapter test.
1. What Is a Biome? - Definition & Types
If you travel around the world, you can visit dry deserts with lots of cacti, the cold arctic with little plant life, or humid tropical rainforests. These different regions on Earth are all called biomes. Continue reading to learn about different types of biomes.
2. 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.
3. 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.
4. Open Ocean Biome: Plants, Animals, Climate & Definition
Seventy-one percent of the surface of our planet is covered by the oceans. It should be no surprise that the open ocean biome is the largest biome on Earth. In this lesson, we will investigate the properties and inhabitants of the open ocean biome.
5. Producers, Consumers & Decomposers in Ecosystems
In this lesson we will learn about producers, consumers, and decomposers. Find out what they are and how they interact with one another in the ecosystem.
6. What is Biotic? - Definition, Factors & Examples
In this lesson you will learn about the biotic components in an ecosystem and the biotic factors that affect organisms. You will also have a better understanding about why planet Earth is a pretty special place.
7. Abiotic Factors of an Ecosystem: Definition & Examples
When it comes to ecosystems, a mountain, a river, and a cloud have more in common than you might think. Abiotic factors have specific and important roles in nature because they help shape and define ecosystems.
8. 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.
9. 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.
10. 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.
11. 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.
12. Natural & Human Disturbances that Affect an Ecosystem
Ecosystems are often forced to change in response to natural and human disturbances. In this lesson, we'll explore how these changes can be negative and positive.
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