What does the decreasing width of each box on a graph chart mean in terms of available matter and energy at each level?

Answer 1

We can't see the graph or bar chart you are looking at, but typically, bar charts and graphs would represent amounts visually by size. Small height thin bars would be less or smaller amounts. A bar taller or wider would represent more. When you look at a graph or bar chart, you must look at what is written on the side and bottom. These clues will help you understand what is being visually represented.

Here is a video showing how to make a bar graph in Google Docs.

Answer 2

The decreasing width of each box on a graph chart typically represents the decreasing amount of matter and energy available at each successive trophic level in an ecosystem. This is due to the inefficiency of energy transfer between trophic levels, with a significant portion being lost as heat. As a result, there is less biomass and energy available at higher trophic levels compared to lower ones.