Why does biomass have a lower energy efficiency as an energy resource?​

Biomass as a renewable energy source has many positive environmental impacts such as the reduction of harmful greenhouse gas (GHG) emissions, less environmental pollution, and the saving of depletable fossil energy

Explanation:

Saul us using a visual communication.

Explanation:

In communication, the use of drawings, photographs, sketches to pass and/or receive messages are referred to as visual communication.

In Saul's case, whenever he draws an item (say apple; for instance), the attendant would understand what he meant and gives him an apple.

This kind of communication may be a little bit difficult and time consuming but until he finds a better way to communicate, he's left with little choice.