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