• Living things need nonliving matter as well as energy.
  • Carbon and nitrogen are examples of nutrients.
  • Unlike energy, matter is recycled in ecosystems.
  • Decomposers release nutrients when they break down dead organisms.
  • nutrients are taken up by plants through their roots.
  • nutrients pass to primary consumers when they eat the plants.
  • When living things die, the cycle repeats.
  • Nutrients can enter or exit an ecosystem at any point and can cycle around the planet.
  • Use the resource below to answer the questions that follow.
Select from the frequently asked questions below