ES Unit 8 & 9 Practice Test
Flashcard
•
Science
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What are the problems associated with landfills?
Back
Problems associated with landfills include source reduction, composting, surface impoundment, leachate, methane production, and more.
2.
FLASHCARD QUESTION
Front
What is a keystone species?
Back
A keystone species is an organism that plays a critical role in maintaining the structure of an ecological community, influencing the types and numbers of various other species in the environment.
3.
FLASHCARD QUESTION
Front
What does it mean for a species to be endangered?
Back
An endangered species is a species that is in danger of extinction.
4.
FLASHCARD QUESTION
Front
What role does the purple sea star play in its ecosystem?
Back
The purple sea star is a keystone species that supports biodiversity in tidepools.
5.
FLASHCARD QUESTION
Front
What is methane and why is it significant in landfills?
Back
Methane is a gas produced in landfills that can be captured and used to produce energy; it is also a greenhouse gas.
6.
FLASHCARD QUESTION
Front
What is source reduction?
Back
Source reduction refers to practices that reduce the amount of waste generated at the source, minimizing the need for landfills.
7.
FLASHCARD QUESTION
Front
What is composting?
Back
Composting is the process of recycling organic waste, such as food scraps and yard waste, into a valuable fertilizer for soil.
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