The largest source of water on the Earth is the oceans and seas.

Soil is formed mainly by the weathering of rocks over a long period.

Igneous rocks are formed by the cooling and solidification of magma.

The topmost fertile layer of soil is called topsoil.

Natural resources that can be replenished are called renewable resources.

Coal, petroleum, and natural gas are examples of fossil fuels.

Iron ore is mainly used in the manufacture of steel.

India is rich in mineral resources like iron, coal, and bauxite.

The biosphere includes all living organisms on the Earth.

Plants that prepare their own food are called producers.

Animals that depend directly on plants for food are herbivores.

Forests help in preventing soil erosion and floods.

Wildlife includes animals living in forests and natural habitats.

Solar energy is a clean and renewable source of energy.

Wind energy is generated using windmills.

Tourism is the activity of travelling for pleasure and relaxation.

Hill stations are popular tourist destinations in India.

Ecotourism promotes conservation of nature and environment.

Conservation of resources means using resources carefully.

The layer of air surrounding the Earth is called atmosphere.

Rivers are an important source of freshwater.

Rainwater harvesting helps in conserving water resources.

The process by which water changes into vapour is evaporation.

Groundwater is stored below the Earth's surface.

Soil is essential for the growth of plants.

Humus is formed from decayed plants and animals.

Clay soil has high water-holding capacity.

Sandy soil drains water quickly.

Loamy soil is best suited for agriculture.

Sedimentary rocks are formed in layers.

Metamorphic rocks are formed due to heat and pressure.

Resources that are found in nature are natural resources.

Coal is a non-renewable resource.

Sunlight is an example of renewable resource.

Minerals are obtained from the Earth's crust.

Bauxite is the ore of aluminium.

Iron ore is mainly found in central India.

Petroleum is also known as black gold.

Natural gas is the cleanest fossil fuel.

The biosphere supports life on Earth.

Plants, animals, and microorganisms form the biosphere.

Producers prepare food using sunlight.

Consumers depend on producers for food.

Decomposers break down dead plants and animals.

Forests are renewable natural resources.

Forests are renewable natural resources.

Forests help in maintaining ecological balance.

Wildlife refers to animals living in natural habitats.

National parks are protected areas.

Jim Corbett National Park is in India.

Deforestation leads to soil erosion.

Green energy causes less pollution.

Solar panels are used to produce solar energy.

Wind energy is produced using wind turbines.

Hydroelectric power is generated from water.

Biogas is produced from organic waste.

Tourism helps in economic development.

Tourists travel for leisure and recreation.

Historical monuments attract tourists.

Taj Mahal is a famous tourist attraction.

Hill stations have cool climate.

Beach tourism is popular in coastal areas.

Ecotourism focuses on nature conservation.

Water cycle maintains water balance on Earth.

Condensation forms clouds.

Precipitation includes rain and snow.

Rivers originate from glaciers or hills.

Delta is formed at the river mouth.

Soil erosion is caused by wind and water.

Afforestation means planting trees.

Renewable resources can be reused.

Non-renewable resources are limited.

Minerals are inorganic substances.

Mining is the process of extracting minerals.

Biosphere includes land, water, and air.

Food chain shows transfer of energy.

Grass is a primary producer.

Tiger is a carnivore.

National parks protect endangered species.

Wildlife sanctuaries protect animals.

Solar energy is eco-friendly.

Wind energy depends on air movement.

Tourism creates employment opportunities.

Cultural tourism includes festivals and traditions.

Water conservation prevents water scarcity.

Soil fertility is increased by humus.

Forests provide timber and medicines.

Wildlife plays a role in ecosystem balance.

Renewable energy reduces carbon emission.

Tourism promotes cultural exchange.

Rivers are used for irrigation.

Soil profile shows different soil layers.

Resources should be used judiciously.

Minerals are non-renewable resources.

Biosphere is a life-supporting zone.

Forests help in regulating climate.

Green energy is sustainable.

Tourism industry includes hotels and transport.

Conservation ensures availability for future.

Natural resources are gifts of nature.