Ecosystem and Environmental Contamination

Subjects
- UMO
  Unicus Mathematics Olympiad (UMO)
  
  Syllabus (Year 2026-27)
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Class 11
  
  Sample Papers (Year 2026-27)
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Class 11
  
  Exam Date:
  
  Jul 14, 2026 / Jul 29, 2026
  
  Awards
  
  Marking Scheme
  
  How to Participate
  
  Ranking Criteria
  
  About UMO
  
  Olympiad Preparation
  
  FAQs
  USO
  Unicus Science Olympiad (USO)
  
  Syllabus (Year 2026-27)
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Class 11
  
  Sample Papers (Year 2026-27)
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Class 11
  
  Exam Date:
  
  Jul 11, 2026 / Jul 25, 2026
  
  Awards
  
  Marking Scheme
  
  How to Participate
  
  Ranking Criteria
  
  About USO
  
  Olympiad Preparation
  
  FAQs
  UEO
  Unicus English Olympiad (UEO)
  
  Syllabus (Year 2026-27)
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Class 11
  
  Sample Papers (Year 2026-27)
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Class 11
  
  Exam Date:
  
  Jul 10, 2026 / Jul 22, 2026
  
  Awards
  
  Marking Scheme
  
  How to Participate
  
  Ranking Criteria
  
  About UEO
  
  Olympiad Preparation
  
  FAQs
  UGKO
  Unicus General Knowledge Olympiad (UGKO)
  
  Syllabus (Year 2026-27)
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  -->
  
  Class 9
  
  Class 10
  
  Class 11
  
  Sample Papers (Year 2026-27)
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  -->
  
  Class 9
  
  Class 10
  
  Class 11
  
  Exam Date:
  
  Jul 8, 2026 / Jul 15, 2026
  
  Awards
  
  Marking Scheme
  
  How to Participate
  
  Ranking Criteria
  
  About UGKO
  
  Olympiad Preparation
  
  FAQs
  UCTO
  Unicus Critical Thinking Olympiad (UCTO)
  
  Syllabus (Year 2026-27)
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  -->
  
  Class 9
  
  Class 10
  
  Class 11
  
  Sample Papers (Year 2026-27)
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  -->
  
  Class 9
  
  Class 10
  
  Class 11
  
  Exam Date:
  
  Jul 9, 2026 / Jul 18, 2026
  
  Awards
  
  Marking Scheme
  
  How to Participate
  
  Ranking Criteria
  
  About UCTO
  
  Olympiad Preparation
  
  FAQs
  UGMO
  Unicus Global Mathematics Olympiad (UGMO)
  
  Syllabus (Year 2026-27)
  
  Class KG
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Sample Papers (Year 2026-27)
  
  Class KG
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Exam Date:
  
  Jan 23, 2026 / Jan 29, 2026
  
  Awards
  
  Marking Scheme
  
  How to Participate
  
  Ranking Criteria
  
  About UGMO
  
  Olympiad Preparation
  
  FAQs
  UGSO
  Unicus Global Science Olympiad (UGSO)
  
  Syllabus (Year 2026-27)
  
  Class KG
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Sample Papers (Year 2026-27)
  
  Class KG
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Exam Date:
  
  Jan 21, 2026 / Jan 28, 2026
  
  Awards
  
  Marking Scheme
  
  How to Participate
  
  Ranking Criteria
  
  About UGSO
  
  Olympiad Preparation
  
  FAQs
  UGEO
  Unicus Global English Olympiad (UGEO)
  
  Syllabus (Year 2026-27)
  
  Class KG
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Sample Papers (Year 2026-27)
  
  Class KG
  
  Class 1
  
  Class 2
  
  Class 3
  
  Class 4
  
  Class 5
  
  Class 6
  
  Class 7
  
  Class 8
  
  Class 9
  
  Class 10
  
  Exam Date:
  
  Jan 16, 2026 / Jan 27, 2026
  
  Awards
  
  Marking Scheme
  
  How to Participate
  
  Ranking Criteria
  
  About UGEO
  
  Olympiad Preparation
  
  FAQs
Exam Details
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Topic	Quiz
Cell, Life Cycles, Reproduction and Development	Quiz on Cell, Life Cycles, Reproduction and Development
Chemical Changes, Combustion and Reactions	Quiz on Chemical Changes, Combustion and Reactions
Ecosystem and Environmental Contamination	Quiz on Ecosystem and Environmental Contamination
Chemical and Magnetic Effects of Electric Current	Quiz on Chemical and Magnetic Effects of Electric Current
Energy Transformation and Transfer	Quiz on Energy Transformation and Transfer
Force, Pressure and Friction	Quiz on Force, Pressure and Friction
Light and Sound	Quiz on Light and Sound
Physical States and Changes in Matter	Quiz on Physical States and Changes in Matter
Metals and Non-Metals	Quiz on Metals and Non-Metals
Micro-organisms	Quiz on Micro-organisms
Earth, Stars and the Solar System	Quiz on Earth, Stars and the Solar System
Endocrine System, Hormones and Circulatory Systems in Animals	Quiz on Endocrine System, Hormones and Circulatory Systems in Animals

Unicus Mathematics Olympiad (UMO)

Syllabus (Year 2026-27)

Sample Papers (Year 2026-27)

Unicus Science Olympiad (USO)

Syllabus (Year 2026-27)

Sample Papers (Year 2026-27)

Unicus English Olympiad (UEO)

Syllabus (Year 2026-27)

Sample Papers (Year 2026-27)

Unicus General Knowledge Olympiad (UGKO)

Syllabus (Year 2026-27)

Sample Papers (Year 2026-27)

Unicus Critical Thinking Olympiad (UCTO)

Syllabus (Year 2026-27)

Sample Papers (Year 2026-27)

Unicus Global Mathematics Olympiad (UGMO)

Syllabus (Year 2026-27)

Sample Papers (Year 2026-27)

Unicus Global Science Olympiad (UGSO)

Syllabus (Year 2026-27)

Sample Papers (Year 2026-27)

Unicus Global English Olympiad (UGEO)

Syllabus (Year 2026-27)

Sample Papers (Year 2026-27)

Ecosystem and Environmental Contamination

Your Understanding of this Topic

Topic-Wise UGSO Quizzes for Class 8