Table of contents
- 1. Introduction to Biology(0)
- 2. Chemistry(0)
- 3. Water(0)
- 4. Biomolecules(0)
- 5. Cell Components(0)
- 6. The Membrane(0)
- 7. Energy and Metabolism(0)
- 8. Respiration(0)
- 9. Photosynthesis(0)
- 10. Cell Signaling(0)
- 11. Cell Division(0)
- 12. Meiosis(0)
- 13. Mendelian Genetics(0)
- Introduction to Mendel's Experiments(0)
- Genotype vs. Phenotype(0)
- Punnett Squares(0)
- Mendel's Experiments(0)
- Mendel's Laws(0)
- Monohybrid Crosses(0)
- Test Crosses(0)
- Dihybrid Crosses(0)
- Punnett Square Probability(0)
- Incomplete Dominance vs. Codominance(0)
- Epistasis(0)
- Non-Mendelian Genetics(0)
- Pedigrees(0)
- Autosomal Inheritance(0)
- Sex-Linked Inheritance(0)
- X-Inactivation(0)
- 14. DNA Synthesis(0)
- 15. Gene Expression(0)
- Central Dogma(0)
- Introduction to Transcription(0)
- Steps of Transcription(0)
- Eukaryotic RNA Processing and Splicing(0)
- Introduction to Types of RNA(0)
- Genetic Code(0)
- Introduction to Translation(0)
- Steps of Translation(0)
- Post-Translational Modification(0)
- Review of Transcription vs. Translation(0)
- Mutations(0)
- 16. Regulation of Expression(0)
- Introduction to Regulation of Gene Expression(0)
- Prokaryotic Gene Regulation via Operons(0)
- The Lac Operon(0)
- Glucose's Impact on Lac Operon(0)
- The Trp Operon(0)
- Review of the Lac Operon & Trp Operon(0)
- Introduction to Eukaryotic Gene Regulation(0)
- Eukaryotic Chromatin Modifications(0)
- Eukaryotic Transcriptional Control(0)
- Eukaryotic Post-Transcriptional Regulation(0)
- Eukaryotic Post-Translational Regulation(0)
- 17. Viruses(0)
- 18. Biotechnology(0)
- 19. Genomics(0)
- 20. Development(0)
- 21. Evolution(0)
- 22. Evolution of Populations(0)
- 23. Speciation(0)
- 24. History of Life on Earth(0)
- 25. Phylogeny(0)
- 26. Prokaryotes(0)
- 27. Protists(0)
- 28. Plants(0)
- 29. Fungi(0)
- 30. Overview of Animals(0)
- 31. Invertebrates(0)
- 32. Vertebrates(0)
- 33. Plant Anatomy(0)
- 34. Vascular Plant Transport(0)
- 35. Soil(0)
- 36. Plant Reproduction(0)
- 37. Plant Sensation and Response(0)
- 38. Animal Form and Function(0)
- 39. Digestive System(0)
- 40. Circulatory System(0)
- 41. Immune System(0)
- 42. Osmoregulation and Excretion(0)
- 43. Endocrine System(0)
- 44. Animal Reproduction(0)
- 45. Nervous System(0)
- 46. Sensory Systems(0)
- 47. Muscle Systems(0)
- 48. Ecology(0)
- Introduction to Ecology(0)
- Biogeography(0)
- Earth's Climate Patterns(0)
- Introduction to Terrestrial Biomes(0)
- Terrestrial Biomes: Near Equator(0)
- Terrestrial Biomes: Temperate Regions(0)
- Terrestrial Biomes: Northern Regions(0)
- Introduction to Aquatic Biomes(0)
- Freshwater Aquatic Biomes(0)
- Marine Aquatic Biomes(0)
- 49. Animal Behavior(0)
- 50. Population Ecology(0)
- Introduction to Population Ecology(0)
- Population Sampling Methods(0)
- Life History(0)
- Population Demography(0)
- Factors Limiting Population Growth(0)
- Introduction to Population Growth Models(0)
- Linear Population Growth(0)
- Exponential Population Growth(0)
- Logistic Population Growth(0)
- r/K Selection(0)
- The Human Population(0)
- 51. Community Ecology(0)
- Introduction to Community Ecology(0)
- Introduction to Community Interactions(0)
- Community Interactions: Competition (-/-)(0)
- Community Interactions: Exploitation (+/-)(0)
- Community Interactions: Mutualism (+/+) & Commensalism (+/0)(0)
- Community Structure(0)
- Community Dynamics(0)
- Geographic Impact on Communities(0)
- 52. Ecosystems(0)
- 53. Conservation Biology(0)
35. Soil
Soil and Nutrients
35. Soil
Soil and Nutrients: Study with Video Lessons, Practice Problems & Examples
Back to all problems
21PRACTICE PROBLEM
A person went to visit an apple farm. He could see lavishly grown apple trees, full of fresh, juicy apples. He thought that the farmer must have used expensive chemical fertilizers. But the farmer said he does not buy synthetic fertilizers. His soil is fertile because of all the dried leaves, which decompose naturally. This kind of farming is called _______________.
A person went to visit an apple farm. He could see lavishly grown apple trees, full of fresh, juicy apples. He thought that the farmer must have used expensive chemical fertilizers. But the farmer said he does not buy synthetic fertilizers. His soil is fertile because of all the dried leaves, which decompose naturally. This kind of farming is called _______________.