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Environmental-Issues

BOD of two samples of water A and B were 120 mg/l and 400 mg/l respectively. Which sample is more polluted.

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Identify a deadly poisonous gas X found at the higher levels of atmosphere. Write its chemical formula and equation of its formation. Why is damage to X layer a cause of concern ?</h2></div>

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BOD of two samples of water A and B were 120 mg/l and 400 mg/l respectively. Which sample is more polluted.

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The Living World

Biological Classification

Plant Kingdom

Animal Kingdom

Morphology of Flowering Plants

Anatomy of Flowering Plants

Structural Organisations in Animals

Cell : The Unit of Life

Biomolecules

Cell Cycle and Cell Division

Transport in Plants

Mineral Nutrition

Photosynthesis in Higher Plants

Respiration in Plants

Plant Growth and Development

Digestion and Absorption

Breathing and Exchange of Gases

Body Fluids and Circulation

Excretory Products and Elimination

Locomotion and Movement

Neural Control and Coordination

Chemical Control and Coordination

Reproduction in Organisms

Sexual Reproduction in Flowering Plants

Human Reproduction

Reproductive Health

Principles of Inheritance and Variation

Molecular Basis of Inheritance

Evolution

Human Health and Disease

Strategies for Enhancement in Food Production

Microbes in Human Welfare

Biotechnology Principles and Processes

Biotechnology and its Applications

Organisms and Populations

Ecosystem

Biodiversity and Conservation

Environmental Issues

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Identify a deadly poisonous gas X found at the higher levels of atmosphere. Write its chemical formula and equation of its formation. Why is damage to X layer a cause of concern ?</h2></div>

BOD of two samples of water A and B were 120 mg/l and 400 mg/l respectively. Which sample is more polluted.

List any three human activities which would lead to an increase in the carbon dioxide content of air.</h2></div>

BOD of two samples of water A and B were 120 mg/l and 400 mg/l respectively. Which sample is more polluted.</h2></div>

Environmental Issues

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