Question

study coach identify main ideas work with a partner. read a paragraph to yourselves. then discuss what you learned in the paragraph. continue until you and your partner understand the main ideas of this lesson. key concept check 1. describe how does weathering break down or change rock? __________________ ________________ ________________ __________________ 438

Explanation:

organisms like lichens (secreting acids to chemically weather rock) or animals (burrowing, causing physical breakage) contributing to rock breakdown.

Answer:

Weathering breaks down or changes rock via mechanical (physical) weathering (e.g., freeze - thaw, root growth, abrasion, breaking rock into smaller pieces without chemical change), chemical weathering (e.g., oxidation, hydrolysis, carbonation, altering rock’s chemical composition), and biological weathering (organisms like lichens or animals contributing to breakdown).