Explanation

• Distillation is a process that removes dissolved physical and chemical impurities from water.
• By boiling the water and then collecting the condensed steam, which is free from many impurities.

Explanation

• Chlorination is the process of adding disinfectants, such as chlorine, to water to kill harmful microorganisms.
• It prevent the spread of waterborne diseases.

Explanation

• Filtration is a process that removes suspended sand particles and insoluble physical impurities from water.
• By passing it through a filter medium, such as sand, gravel, or a membrane.

Explanation

• A food web is a network of multiple food chains that overlap and connect.
• It showing the complex feeding relationships between different species in an ecosystem.
• It's a web-like structure that illustrates the various pathways that energy and nutrients flow through the ecosystem.

Explanation

The food chain is the sequence of energy transfer from:

• Producers (plants, algae, phytoplankton) →
• Consumers (herbivores, carnivores, omnivores) →
• Decomposers (fungi, bacteria, insects)

This energy transfer is also known as the energy flow or trophic cascade.

Explanation

• Deserts are areas with very low rainfall, typically less than 25 centimeters (10 inches) per year.
• It resulting in a barren and often sandy landscape with limited vegetation and wildlife.

Explanation

• Grasslands, also known as prairies or savannas, are areas with lower rainfall than forests, typically between 50-200 mm annually.
• This lower rainfall doesn't support the growth of trees, but instead favors grasses and other herbaceous plants.

Explanation

• A land with high rainfall, typically between 250 to 450 mm annually, is a forest.
• Forests are areas with high vegetation density, and the abundant rainfall supports the growth of a diverse range of plant and tree species.

Explanation

• An ecosystem includes all the living components (biotic factors) like plants, animals, and microorganisms, and non-living components (abiotic factors).
• Like soil, water, air, and sunlight, interacting with each other.

Explanation

• Marine water is water that contains a high amount of salt, typically above 30% salinity.
• This includes oceans, seas, and other saltwater bodies.