Trace fossil because a trace fossil is a fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself.
I think the mean DNA but don't quote me on that.
The disadvantages of the pyramid of productivity as a representation: The rate of biomass production of an organism is required, which involves measuring growth and reproduction through time. There is still the difficulty of assigning the organisms to a specific trophic level.
By consuming less than 1200 calories a day it impacts a person’s metabolism by slowing it down and forcing the body to break down its own tissues if it is not receiving sufficient calories to withstand vital functions. There are slight side effects of a less than 1200 calories which are faintness, tiredness, irregular periods, and unsteadiness. Some major side effects might have impact on the gallbladder, gout, excruciating inflammation of the joints and also death.
