A pyramid of energy can never be inverted because energy decreases by tenfold each level. This can't be reversed because energy can't just increase by tenfold. It has to come from somewhere.
Cells need energy for various purposes
The amount of CO2 absorbed by plants through photosynthesis is enormous plants have the ability to absorb and in turn sequester enormous amounts of carbon over a very long time much of the excess atmospheric CO2 is from the result of burning phonology fuels
Yes, protists have cell walls.
Protists cell walls are made of composed cellulose, protein strips , and silica
For some protists, we can even found components like pectin on the cell walls
hope this helps
