What is the carbon dioxide-oxygen cycle?
Life Sciences Unit Test

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Science
•
5th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The carbon dioxide-oxygen cycle is the process by which plants take in carbon dioxide from the air and release oxygen through photosynthesis, while animals take in oxygen and release carbon dioxide through respiration.
2.
FLASHCARD QUESTION
Front
What do plants need to grow?
Back
Plants need sunlight, water, air, and nutrients to grow. Soil is not always necessary, especially in hydroponic systems.
3.
FLASHCARD QUESTION
Front
How do plants and animals differ in obtaining energy?
Back
Unlike animals, plants are able to make their own food through photosynthesis, using sunlight, carbon dioxide, and water.
4.
FLASHCARD QUESTION
Front
What happens to a food web if one species decreases?
Back
If a species decreases, it can affect the entire food web, as other species that rely on it for food may struggle to survive.
5.
FLASHCARD QUESTION
Front
What should be added to hydroponic plants' water?
Back
Nutrients should be added to the water in hydroponic systems to support plant growth.
6.
FLASHCARD QUESTION
Front
What is photosynthesis?
Back
Photosynthesis is the process by which green plants use sunlight to convert carbon dioxide and water into glucose and oxygen.
7.
FLASHCARD QUESTION
Front
What role do decomposers play in an ecosystem?
Back
Decomposers break down dead organic matter, returning nutrients to the soil and helping to recycle materials in the ecosystem.
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