<span>They are not visible because the chromatin coils up,shortens,and thickens.</span>
Pyramids of biomass display the weight of organisms at each level. Inverted pyramids of biomass can occur when the primary producer has a high turnover rate. Pyramids of energy are usually upright and are the best representation of energy flow and ecosystem structure.
I’m sorry if this didn’t help I’m still new to answering questions on Brainly
