The geologic time scale is a timeline that uses certain divisions to represent evolutionary time

A record of Earth's history from its origin 4.6 billion years ago (BYA) to the present. This history is divided into blocks of time distinguished by geologic and evolutionary events. The time scale is divided into units called eons, eras, periods and epochs.

Explanation:

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg