To solve this problem, we need to understand the relationship between Gross Primary Productivity (GPP) and Net Primary Productivity (NPP) in an ecosystem.$\newline$Let's analyze the concepts:$\newline \bullet$Gross Primary Productivity (GPP):$\newline$ - GPP is the total amount of energy or biomass produced by photosynthesis in an ecosystem.$\newline$ - It represents the total energy captured by autotrophs (e.g., plants) before any is used for respiration.$\newline \bullet$Net Primary Productivity (NPP):$\newline$ - NPP is the amount of energy or biomass that remains after autotrophs have met their own energy needs through respiration.$\newline$ - It is the energy available to consumers in the ecosystem.$\newline$The relationship between GPP and NPP can be expressed as:$\newline$NPP = GPP - Respiration$\newline$From this equation, it is clear that:$\newline \bullet$GPP is always greater than NPP because some energy is always used for respiration.$\newline$Therefore, the correct statement is:$\newline$Option 1: Gross primary productivity is always more than net primary productivity.$\newline$This corresponds to the correct option, which is Option 1.