EVERYDAY SCIENCE

Detailed explanation-1: -Organisms like plants, fungi, lichen, and bacteria can secrete organic acids and help in weathering of rocks therby helping in soil formation.

Detailed explanation-2: -Even the tiniest bacteria, algae and lichens produce chemicals that help break down the rock on which they live, so they can get the nutrients they need.

Detailed explanation-3: -Soil Organisms are generally grouped into two categories: micro fauna/microorganisms and macrofauna. The main soil microorganisms include bacteria, fungi, and protozoa. The macro fauna include oligochaeta, arthropods, mollusks, and nematods.

Detailed explanation-4: -Mechanisms related to weathering of rocks and minerals by soil bacteria. Weathering bacteria perform redox reactions or produce compounds such as organic/inorganic acids and chelating agents that directly affect the dissolution of minerals (represented by curved black arrows).

Detailed explanation-5: -Decomposers play a critical role in the flow of energy through an ecosystem. They break apart dead organisms into simpler inorganic materials, making nutrients available to primary producers.