This is the rate at which primary producers produce biomass.

Primary producers, which are usually plants and other photosynthesizers, are the gateway through which energy enters food webs. Productivity is the rate at which energy is added to the bodies of a group of organisms, such as primary producers, in the form of biomass

the awnser is d i think

the correct answer is: d. the saltine and pretzel are made of flour, yeast, and baking soda, and salt. the pecan contains no flour but it does contain fats. the pecan is a nut that can be consumed as a healthy snack. first of all, pecans are a source of fat (monounsaturated fat), but they provide less fat than some other nuts. pecans are a rich source of dietary fiber, manganese magnesium, phosphorus, thiamin, vitamin e…