Answer:
3) CO2 + water
4) producers
5) oxygen
Explanation:
Autotrophs are producers which use sunlight, water and carbon dioxide to make their own food. This occurs via the process of photosynthesis in green plants, algae ,phytoplankton and cyanobacteria. These occupy essential places in the food web, and provide the energy used by hetertrophs or consumers.
6 CO2 + 6 H2O + light → C6H12O6 + 6 O2
Carbon Dioxide + Water + Light Glucose + Oxygen
Consumers carry out respiration to obtain the energy stored in carbohydrates produced by plants.
C6H12O6+ 6 O2 → 6 CO2 + 6 H2O + ≅38 ATP
glucose+ oxygen → carbon dioxide+ water+ energy