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.
Its the Eccentricity of the earth. (shape of Earth's Orbit around the sun, whether it is more circular or ovular.)
I would say that it is B. thinner.
If organisms that lived there before had exceeded the carrying capacity then the ecosystem would no longer be able to sustain life
C lol trying to get points