eco
Abiotic: non-living components of an ecosystem (eg. soil, sun, water) Biotic: living parts of an ecosystem (eg. plants, rabbits) Food webs: All the paths that energy can travel in an ecosystem. *sun →producers →primary consumers (herbivore) → secondary consumers ….. → top predator *arrow point in the direction the energy moves Dynamic Equilibrium: balance in the ecosystem | Photosynthesis: -plants use the sun’s energy to convert carbon dioxide and water into sugar (glucose) and oxygen CO2 + H2O → C6H12O6 + O2 Respiration: -all organisms undergo cellular respiration. -organisms turn glucose and oxygen into water and carbon dioxide in order to release energy C6H12O6 + O2 → CO2 + H2O *These are opposite processes | Spheres: Hydrosphere: all water on/around the earth Lithosphere: the rocks/dirt/ground Biosphere:all the living things Atmosphere: the air with all the gases around the earth. Open system (for energy): energy comes in from space and can leave back to space Closed system (for matter): matter isn’t created or destroyed, it just changes forms |
Carbon Cycle Carbon travels through biotic and abiotic parts of the ecosystem. It includes photosynthesis and respiration. -humans are impacting the carbon cycle by burning fossil fuels and releasing more CO2 into the atmosphere | Nitrogen Cycle -plants can’t use nitrogen from the atmosphere. Nitrogen fixing bacteria, lightning and decomposers need to convert it into ammonium/nitrates first | Water Cycle: -water will change states as it travels through the 4 spheres Potassium Cycle: -potassium is commonly related to strong stems/stalks |
Phosphorous Cycle: -found in DNA, bones and cell membranes -is not cycled through the atmosphere -cycles very slowly | Climate Change Indicators: -increase in natural disasters -increase in air and ocean temperatures -animal migration patterns change -melting glaciers/sea ice -rising sea levels | FNMI - First Nations, Metis and Inuit |
