When a caterpillar eats a leaf, then a thrush eats the caterpillar, or when a hawk eats the thrush only 5 to 20% of usable energy is transferred from one level to the next. . . . Thus herbivores will account for a much smaller fraction of the biomass [than plants] and the carnivores for a still smaller fraction.
I tell people in their careers, 'Look for growth. Look for the teams that are growing quickly. Look for the companies that are doing well. Look for a place where you feel that you can have a lot of impact. '