Collado, Violeta F.2026-07-152026-07-152020Collado, V. F. (2020). Environmental Science (SESE 120). [Instructional Materials, Don Mariano Marcos Memorial State University - North La Union Campus, Sapilang, Bacnotan, La Union]. Lakasa ti Sirib, DMMMSU Institutional Repository.https://lakasa.dmmmsu.edu.ph/handle/123456789/2163Module 1 Ecological Principles and Application -- Ecosystem Concept -- The Earth as an Ecosystem -- Ecosystem Function -- Module 2 Energy Flow and Feeding Relationships -- Food Chain, Food Web and Energy Pyramid -- The Biochemical Cycles -- Module 3 Principles Pertaining to Limiting Factors -- Leibigs' Law of minimum -- Ecology of Population -- Ecology of Communities -- Comparative Ecosystem Ecology -- Philippine Flora and Fauna -- Module 4 Types of Ecosystem -- Aquatic Ecosystem -- Environmental Issues and Concerns -- Pollution Policy/Environmental Laws75p.: col., ill.en-USEnvironmental scienceEcosystemsEcological principlesEnergy flowFood chains and food websBiogeochemical cyclesPopulation ecologyCommunity ecologyAquatic ecosystemsEnvironmental pollutionEnvironmental law and policyPhilippine flora and faunaScience—EcologyEnvironmental sciencesAquatic ecologyEnvironmental protection and policyEnvironmental sciencesEcologyBiogeochemical cyclesAquatic ecologyEnvironmental policyEnvironmental lawEnvironmental sciences—Study and teachingInstructional Material