Humans Change the Environment | Grade 4 | Unit 1 - Concept 1 - Lesson 4 | Science

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In This Part :
Structural Adaptation of fish to breathe under water:
Unlike human, fish don't breathe using lungs, but they have gills to breathe.
Gills are considered as unique structural adaptation that allow fish to live and
breathe under water.
Gills are found on both sides of a fish's head.
How do fish breathe under water ?:
Humans Change the Environment
As the human activities have negative effects on animals and plants, they also have negative effects on human such as:
The role of human to help restore ecosystem :
• As humans can cause harmful changes, they can help restore their ecosystems by :
Replanting the cleared forests.
Removing the pollutants of air and water.
Preserving plants and animals in these ecosystems.
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