Grade 9

Understanding our Environment
(a) What is Environmental Science?
(b) What are our main environmental problems?
(c) A global perspective of environmental problems.
(d) The root of environmental problems.
(e) A sustainable world.
Living things in Ecosystems
(a) What is an ecosystem?
(b) Habitat and ecological niche.
(c) How species interact with each other.
(d) Adapting to the environment.
How Ecosystems work
(a) Energy flow in ecosystems.
(b) The cycling of materials.
(c) How ecosystems change.
Kinds of Ecosystems
(a) Forests.
(b) Grasslands, Deserts and Tundra.
(c) Freshwater ecosystems.
(d) Marine ecosystems.
(e) Bio-geographic zones of India.
Water
(a) Our water resources.
(b) Freshwater pollution.
(c) Ocean pollution.
Air
(a) What causes air pollution?
(b) Thermal inversions, photochemical smog and acid precipitation.
(c) Impact of air pollution.
Atmosphere and Climate
(a) The atmosphere.
(b) Climate.
(c) Greenhouse earth.
(d) The ozone layer.
Soil and Land
(a) Deforestation.
(b) Soil erosion and desertification.
(c) Land pollution.
People
(a) World poverty and gap between developed and developing countries.
(b) Poverty in developed countries, poverty in developing countries.
(c) The implications of poverty trap for the environment in developing countries.
Urbanisation
(a) Causes of urbanisation.
(b) Manifestations of urbanisation.
(c) Social, economic and environmental problems.
Agriculture
(a) Unsustainable patterns of modern industrialised agriculture.
(b) Environmental damage due to large farm units.
(c) Food mountains in developed countries.