About This Chapter
Who's it for?
Anyone who needs help learning or mastering college environmental science material will benefit from taking this course. You will be able to grasp the subject matter faster, retain critical knowledge longer and earn better grades. You're in the right place if you:
- Have fallen behind in understanding biodiversity or ecosystems.
- Need an efficient way to learn about ecosystems.
- Learn best with engaging auditory and visual tools.
- Struggle with learning disabilities or learning differences, including autism and ADHD.
- Experience difficulty understanding your teachers.
- Missed class time and need to catch up.
- Can't access extra science learning resources at school.
How it works:
- Start at the beginning, or identify the topics that you need help with.
- Watch and learn from fun videos, reviewing as needed.
- Refer to the video transcripts to reinforce your learning.
- Test your understanding of each lesson with short quizzes.
- Submit questions to one of our instructors for personalized support if you need extra help.
- Verify you're ready by completing the Ecosystems chapter exam.
Why it works:
- Study Efficiently: Skip what you know, review what you don't.
- Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
- Be Ready on Test Day: Use the Ecosystems chapter exam to be prepared.
- Get Extra Support: Ask our subject-matter experts any relevant question. They're here to help!
- Study With Flexibility: Watch videos on any web-ready device.
Students will review:
In this chapter, you'll learn the answers to questions including:
- What types of ecological niches and habitats are found in ecosystems?
- What are the laws of thermodynamics?
- What occurs during the carbon and nitrogen cycles?
- How do food chains and energy flow work?
- How do fossil fuels and greenhouse gases impact global warming?
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. The Laws of Thermodynamics
Learn about the first and second laws of thermodynamics. Find out how energy is generated, how it converts from one form to another, and what happens to energy in a closed system.
4. Global Ecology: Definition and Overview
A large oil spill in the middle of the ocean and the release of greenhouse gases into the atmosphere are examples of environmental problems that can influence the entire planet. This lesson will explore the study of environmental problems occurring on a global scale, including the impact of globalization and current major global environmental problems.
5. What is Biodiversity? - Definition and Relation to Ecosystem Stability
Imagine making a list of all of the species you have ever heard of; it would be an enormous list! There are many different species on this planet. This lesson will explore the diversity of species, as well as the different types of diversity and how diversity of life is essential for maintaining healthy ecosystems.
6. 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.
7. 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.
8. 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.
9. 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.
10. 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.
11. Community Ecology: Definition & Types
Community ecology looks at the interactions between populations of organisms. Here we explore a polar ecosystem in Greenland to describe what community ecology entails and what it really means to be at the top of the food chain.
12. Realized Niche: Example & Definition
Every organism is adapted to environmental conditions in its habitat. However, it sometimes faces competition with other species that limits the conditions under which it can exist. Explore how competition between species can shape an organism's niche.
13. What Are Detritivores? - Definition & Examples
In this lesson, we will investigate detritivores. These organisms play a crucial role in all ecosystems by utilizing their unique diet to clean up decaying organic matter. We will see examples of them and learn of the benefits they provide to the world.
14. Abiotic Factors of the Tropical Rainforests
Every environment contains what are called biotic and abiotic factors. In this lesson you'll learn the definition and importance of abiotic factors. You'll also view some examples of abiotic factors that are present in the tropical rainforest.
15. Chaparral Animals: List, Food Web & Adaptations
Millions of different species exist around the world, each of which has evolved specific adaptations to thrive in environments seemingly unfit for humans. In this lesson, we're going to look at the plants and animals in one such biome, the chaparral.
16. Chaparral Biome Plant Life
Chaparrals are hot, dry, desert-like areas. While this biome may seem harsh, it is home to many types of plants specially adapted to the mild winters and hot, fiery summers.
17. Estuary Animals & Plants
In this lesson, you will learn about estuaries. Specifically, you will learn about the different types of plants and animals that live in estuaries and make up their complex ecosystem.
18. Scavenger Animals: Definition & Examples
Do you eat leftovers? Many other animals do too. And many of these animals are scavengers. Find out what a scavenger animal is and some cool examples of these animals.
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Other chapters within the Introduction to Environmental Science: Help and Review course
- Environmental Science Basics: Help and Review
- Interaction Among Organisms in the Ecosystem: Help and Review
- Evolving Ecosystems: Help and Review
- Atmospheric Science and the Environment: Help and Review
- Geological Science: Help and Review
- Biological Science: Help and Review
- Pollution of Freshwater Resources: Help and Review
- Bioremediation: Help and Review
- Land Resources: Help and Review
- Population and the Environment: Help and Review
- Food and Agricultural Resources: Help and Review
- Solid and Hazardous Waste: Help and Review
- Human Impact on the Environment: Help and Review
- Renewable Resources: Help and Review
- Nonrenewable Resources: Help and Review
- Environmental Sustainability: Help and Review
- Environmental Risk Analysis: Help and Review
- Ethical and Political Processes of the Environment: Help and Review