About This Chapter
MTLE Middle Level Science: Interdependence, Energy Flow and Ecosystems - Chapter Summary
Text and video lessons comprise this educational chapter on interdependence, energy flow and ecosystems. You've likely already studied these topics at length, but the lessons can serve to remind you of how organisms within ecosystems rely on one another for survival. The lessons note the distinctions between species diversity and species richness, and they explain the process of photosynthesis. Review this chapter in order to:
- Explain the elements that contribute to species richness
- Understand the diversity of ecosystems within freshwater, lakes and oceans
- Describe the diversity of ecosystems in temperate forests and rainforests
- Explore the biodiversity and characteristics of hot and cold desert ecosystems
- Define and compare biotic and abiotic factors
- Discuss the ecosystem ecology field of study
- List the components of a food web
- Explain the purpose of decomposers
- Examine the process of ecological succession
The flexibility of this program of study allows you to learn online 24/7 at your own pace. Make the most of your review time by utilizing the video tags to jump quickly from one topic to the next. They can be accessed by clicking the timeline link. Ideal for those who prefer to learn by reading, the text lessons also highlight important keywords. Our short lesson quizzes consist of five questions, and corresponding worksheets of your quiz answers can be printed out for future reference.
MTLE Middle Level Science: Interdependence, Energy Flow and Ecosystems Chapter Objectives
Each of the MTLE Middle Level Science examination's two subtests feature two subareas that you'll have to complete. The equivalent of 57% of the test weighting, Subarea I of Subtest 2 is titled Life Science. During this portion of the computer-based examination, you'll be evaluated on your ability to understand interdependence in ecosystems as well as the abiotic and biotic characteristics of various habitats. You'll also need thorough knowledge of decomposers and food webs. Subtest 1 and Subtest 2 both have about 50 multiple-choice questions, and each should be finished within a one-hour time limit.
1. Species Richness: Definition & Determining Factors
In this lesson, you'll learn what species richness is and what factors can influence the index of species richness. You'll also discover why it is an important index to measure in terms of conservation.
2. Ecosystems of Oceans and Freshwater: Biological Diversity and Water
In this lesson, you'll learn about the biodiversity of ecosystems based on water. You will discover that marine, freshwater and a mixture of salt and freshwater create very different ecosystems, which in turn influence the amount of biodiversity that is found in these habitats.
3. Biological Diversity and the Forest: Ecosystems of the Rainforests and Temperate Forests
In this lesson, you'll learn about three main types of forests found on earth: coniferous, deciduous and tropical rainforests. You'll also discover how the ecosystems where these trees are located affect the biodiversity within them.
4. Desert Ecosystems: How Biodiversity Impacts Hot and Cold Deserts
In this lesson, you'll learn about the biodiversity that makes up a desert ecosystem. You will discover what makes a desert a desert and study the different plant and animal life that inhabit both hot and cold deserts.
5. 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.
6. 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.
7. Ecosystem Ecology: Definition & Explanation
What powers life? How much energy do animals get from eating plants? What short- and long-term effects will climate change have on our environment? Asking questions such as these help ecologists better understand ecosystems and the processes within them.
8. What is a Food Web? - Definition & Explanation
This lesson will provide a definition of a food web, as well as describe its parts and discuss examples of different types. It will also explain the transfer of energy through a food web.
9. What is a Decomposer? - Definition & Examples
Decomposers are an often overlooked part of the natural world, but their job is an important one. Learn what decomposers are, what role they have in the environment and how people use them.
10. 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.
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 MTLE Middle Level Science: Practice & Study Guide course
- MTLE Middle Level Science: Principles of Scientific Inquiry
- MTLE Middle Level Science: Scientific Methods & Tools
- MTLE Middle Level Science: Connecting Science & Other Subjects
- MTLE Middle Level Science: Developing Science Reading Skills
- MTLE Middle Level Science: Reading Comprehension & Analysis
- MTLE Middle Level Science: Components & Evolution of Earth
- MTLE Middle Level Science: Matter & Energy
- MTLE Middle Level Science: Earth's Structure & Weather Cycles
- MTLE Middle Level Science: Earth, The Solar System & The Universe
- MTLE Middle Level Science: Human Interactions with Earth Systems
- MTLE Middle Level Science: Structures & Functions of Living Organisms
- MTLE Middle Level Science: Molecular & Cellular Life Processes
- MTLE Middle Level Science: Evolution of Life
- MTLE Middle Level Science: Linear Motion & Forces
- MTLE Middle Level Science: Vibrations, Waves & Light
- MTLE Middle Level Science: Electricity & Magnetism
- MTLE Middle Level Science: Properties & Structure of Matter
- MTLE Middle Level Science: Understanding Chemical Reactions, Thermodynamics & Kinetics
- MTLE Middle Level Science Flashcards