Apopulation exceeds its imported from outside its geographic boundaries. when it ecosystem goods and services must be biocapacity trophic level carrying capacity ecological footprint 19 what are the 3 inputs required for photosynthesis? sunlight, oxygen, and glucose sunlight, nitrogen, and water sunlight, carbon dioxide, and glucose sunlight, oxygen, and water sunlight, carbon dioxide, and water 20. which of the following is an abiotic factor? fungi plants animals rainfall bacteria