Unit 12
Flashcard
•
Science
•
5th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an ecosystem?
Back
An ecosystem is a community of living organisms (plants, animals, and microorganisms) interacting with their physical environment (soil, water, air) in a specific area.
2.
FLASHCARD QUESTION
Front
What are producers in an ecosystem?
Back
Producers are organisms, like plants, that create their own food through photosynthesis and form the base of the food chain.
3.
FLASHCARD QUESTION
Front
What happens when a new species is introduced to an ecosystem?
Back
The introduction of a new species can disrupt the balance of the ecosystem, potentially leading to a decrease in native species and changes in resource availability.
4.
FLASHCARD QUESTION
Front
What is the role of decomposers in an ecosystem?
Back
Decomposers break down dead organic matter, returning nutrients to the soil and helping to maintain the nutrient cycle.
5.
FLASHCARD QUESTION
Front
What is a food web?
Back
A food web is a complex network of interconnected food chains that shows how energy and nutrients flow through an ecosystem.
6.
FLASHCARD QUESTION
Front
What effect does removing producers from an ecosystem have?
Back
Removing producers can lead to the collapse of the food web, as consumers (herbivores and carnivores) depend on them for energy.
7.
FLASHCARD QUESTION
Front
What is the impact of pesticides on food chains?
Back
Pesticides can reduce the population of certain species, which can have a cascading effect on the food chain, affecting predators and other organisms.
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