Strata refers to layers of sedimentary rock or soil that have formed over time. These layers can vary in thickness, composition, and color, providing valuable information about the Earth's history. Geologists study strata to understand past environments, climate changes, and the processes that shaped the landscape. In addition to geology, the term "strata" is also used in other fields, such as sociology and education. In sociology, it describes social layers or classes within a society. In education, it can refer to different levels of learning or achievement among students, highlighting the diversity in knowledge and skills.