AP BIOLOGY

Detailed explanation-1: -Net primary productivity varies among ecosystems and depends on many factors. These include solar energy input, temperature and moisture levels, carbon dioxide levels, nutrient availability, and community interactions (e.g., grazing by herbivores) 2.

Detailed explanation-2: -In addition to solar radiation, the main abiotic factors that affect rates of photosynthesis and NPP are water, temperature, carbon dioxide concentration, and nutrients.

Detailed explanation-3: -Net primary productivity varies among ecosystems and depends on many factors including solar energy input, temperature and moisture levels, carbon dioxide levels, nutrient availability, and community interactions-e.g., grazing by herbivores.

Detailed explanation-4: -Net Primary Productivity is affected by temperature, water availability, carbon dioxide, and nutrients, all of which are abiotic factors. In Tropical Rainforests, water, sunlight, and high temperatures are consistent and a dense concentration of plants is present, causing both the GPP and NPP to be very high.

Detailed explanation-5: -Coral reef ecosystem has highest gross primary productivity due to availability of large number of autotrophs per unit area.