Ecology is the study of the relationships among living organisms, including humans, and their physical environment. Ecology considers organisms at the individual, population, community, ecosystem, and biosphere level. Ecology overlaps with the closely related sciences of biogeograohy, evolutionary biology, genetics, ethology, and natural history. Ecology is the branch of biology, and is the study of abundance, biomass, and distribution of organisms in the context of the environment. It encompasses life processes, interactions and adaptations; movement of materials and energy through living communities; successional development of ecosystems; cooperation, competition, and predation with and between species; and patterns of biodiversity and its effect on ecosystem processes. Ecology has practical applications in conservation biology, wetland management, natural resource management (agroecology, agriculture, forestry, agroforestry, fisheries, mining, tourism), urban planning (urban ecolo

 Educational measurement refers to the use of educational assessments and the analysis of such data such as scores obtained from educational tests to infer the abilities and proficiencies of students. The approaches overlap with those in psychometrics. Educational measurement is the assigning of numerals to traits such as achievement, interest, attitudes, aptitudes, intelligence, and performance. The aim of theory and practice in educational measurement is typically to measure abilities and levels of attainment by students in areas such as reading, writing, science, mathematics and so forth. Traditionally, attention focuses on whether assessments are reliable and valid. In practice, educational assessment is largely concerned with the analysis of data from educational assessments or tests. Typically, this means using total scores in assessments, whether they are multiple choice or open-ended and marked using marking rubics or guides. In technical terms, the pattern of scores by individ