The grass produce food at the base of the pyramid through a process of photosynthesis.
Photosythesis is the process where green plants produce food and oxygen by using light energy from the sun with carbondioxide and water . It is at the base of food pyramid because it is the primary producer.
Predator Because they are at the top they eat everything so when the arrows point towards them on the web it means they are essentially eating them because like a food web this organism is on top and the other prey are on the bottom
