You find two fossils. one is a very primitive organism and the other is a complex organism. which of these two fossils do you think is the oldest?
a) probably the complex organism on the right
b) probably the primitive organism on the left
c) it is certain that the two organisms lived at the same time
d) it is foolish to even speculate about the relative age of the fossils

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.

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