About This Chapter
TASC Science: Ecosystem Dynamics, Functioning & Resilience - Chapter Summary
Pore over this chapter's lessons to get a better idea of an array of ecosystem factors that may surface as you're answering questions on the TASC Science exam. You will be ready for test items on any of the following once you've studied this chapter's resources:
- Ecological succession and resilience
- The effects of introduced and invasive species on ecological balance
- The roles of fossil fuels and greenhouse gases in global warming
- Pollution, habitat destruction and other environment impacts from humans
- Humans overexploiting species
- Conservation biology
- Habitat fragmentation and metapopulations
The major terms associated with these topics are clearly pointed out in the lesson transcripts. Video tags conveniently allow you to pick out the video portions you'd like to spend additional time with after your first review.
Objectives of the TASC Science: Ecosystem Dynamics, Functioning & Resilience Chapter
The TASC Science exam is used to assess your compatibility with what is expected from the average senior attending high school. Material in this chapter readies you for test items based on the life sciences content on ecosystems. The whole life sciences area is 36% of the TASC Science test overall. Virtually all exam items are in multiple-choice format, and you'll have about 85 minutes to complete this test.
1. Ecological Resilience
After completing this lesson, you will be able to explain what ecological resilience is, and how humans impacts increase the need for it among plants and other animals. A short quiz will follow.
2. 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.
3. 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?
4. 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.
5. 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.
6. Pollution and Habitat Destruction: The Human Factors Contributing To Endangerment & Extinction
In this lesson you will learn about two ways humans contribute to species extinction. We break up habitats by building roads and clearing land, and we pollute both land and water. You will also learn about the specific terms used to describe the processes, habitat fragmentation and anthropogenic pollution.
7. Over-Exploitation: How Humans Affect Ecosystems By Decreasing Species Populations
In this lesson, you'll learn how humans overexploit or overharvest species. You will discover the primary way in which humans are responsible for overfishing. You will also learn about how this negatively impacts ecosystems.
8. 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.
Earning College Credit
Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.
To learn more, visit our Earning Credit Page
Transferring credit to the school of your choice
Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.
Other chapters within the TASC Science: Prep and Practice course
- TASC Science: Structure & Function of Living Things
- TASC Science: Growth & Development of Organisms
- TASC Science: Matter & Energy Flow in Organisms
- TASC Science: Interdependence in Ecosystems
- TASC Science: Cycles of Matter & Energy Transfer in Ecosystems
- TASC Science: Social Interactions & Group Behavior
- TASC Science: Biodiversity & Humans
- TASC Science: Developing Environmental Solutions
- TASC Science: Gene Inheritance
- TASC Science: Variation of Traits
- TASC Science: Evidence of Common Ancestry & Diversity
- TASC Science: Natural Selection & Adaptation
- TASC Science: The Universe & Its Stars
- TASC Science: Earth & the Solar System
- TASC Science: Earth's Formation & Plate Tectonics
- TASC Science: Radiometric Dating
- TASC Science: Earth Materials & Systems
- TASC Science: Water & Earth's Surface Processes
- TASC Science: Weather & Climate
- TASC Science: Natural Resources
- TASC Science: Natural Hazards
- TASC Science: Human Impacts on Earth Systems
- TASC Science: Structure & Properties of Matter
- TASC Science: Chemical Reactions
- TASC Science: Nuclear Processes
- TASC Science: Forces & Motion
- TASC Science: Types of Interactions
- TASC Science: Types of Energy
- TASC Science: Conservation of Energy & Energy Transfer
- TASC Science: Wave Properties
- TASC Science: Electromagnetic Radiation
- TASC Science: Information Technologies & Instrumentation
- TASC Science Flashcards