I believe that's grass as it's the producer which is at the bottom of the food chain. This feeds the class I consumers which are consumed by the class II consumers and so on. So that means grass would have the largest impact.
the excretory system removes waste from the body and removes waste from the blood. The digestive system breaks down the the food you eat into nutrients that provide energy and building materials for cells. The digestive and excretory system work together to process the food that you eat.
I believe the correct answer is that the <span>change in pH would destroy the herbivores present in the lake. Due to the increase in pH algae could not survive in the lakes so they find other places wherein they could reproduce therefore increasing the population of </span><span>periphytic algae.</span>