About This Chapter
How it works:
- Identify which concepts are covered on your ecology and ecosystems homework.
- Find videos on those topics within this chapter.
- Watch fun videos, pausing and reviewing as needed.
- Complete sample problems and get instant feedback.
- Finish your ecology and ecosystems homework with ease!
Topics from your homework you'll be able to complete:
- Environmental factors
- Levels of ecology
- Food chains and trophic levels
- Energy flow in an ecosystem
- Predator/prey interactions
- Symbiotic relationships
- Population carrying capacity
- Migration and dispersion
- Conservation biology
- Metapopulation theory
- Ecological succession
- Introduced and invasive species
- The nitrogen and carbon cycles
- Biome types
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. 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.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.
8. 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?
9. 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.
10. 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.
11. 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.
12. 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.
13. Tropical Rainforest Producers and Consumers
This lesson is about producers and consumers in the tropical rainforest. In this lesson, we'll go over what producers and consumers are and look at specific examples in the tropical rainforest ecosystem.
14. Clownfish & Sea Anemones: A Symbiotic Relationship
If you've seen the film 'Finding Nemo', you may already be familiar with clownfish and sea anemones. But, do you understand why they can live together? Or how each benefits the other? This lesson will explore the symbiosis between the clownfish and the sea anemone.
15. 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.
16. Evolutionary Stable Strategy
This lesson describes an evolutionary stable strategy (ESS). It briefly introduces game theory, explains the features of an ESS, gives a simple game that predicts the possibility of ESS, then looks at some real examples of ESS in nature.
17. Subsistence Strategies: Definition & Types
There are five main subsistence strategies. These strategies relate to each other as they build from tiny societies to full populations. This lesson reviews these five strategies of subsistence.
18. Pseudomonas Fluorescens Uses in Agriculture
This lesson is going to describe an organism known as Pseudomonas fluorescens. You'll learn what it is and how it's important to agriculture, including specific examples.
19. Rust Fungus: Definition & Life Cycle
Rust fungus is a common fungus found on many different types of plants. It has a complex life cycles, requiring two separate plants species to complete.
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Other chapters within the Middle School Earth Science: Homework Help Resource course
- Earth's Spheres & Structure: Homework Help Resource
- Understanding Plate Tectonics: Homework Help
- Understanding Earthquakes: Homework Help
- Understanding Volcanoes: Homework Help
- Rock Deformation & Mountain Building: Homework Help
- Shaping the Earth's Surface: Homework Help Resource
- Thermal Energy: Homework Help
- Energy in the Earth System: Homework Help Resource
- Earth's Energy Resources: Homework Help
- Earth's Material Resources: Homework Help
- Earth Science Investigation & Experimentation: Homework Help Resource