Example of crossing over cross

Crossing Over Biology: Alleles

For example, a DNA segment on each chromosome section may code for eye color, although one chromosome may code for brown eyes and the other for blue eyes. ... Crossing over occurs most often between different alleles coding for the same gene.

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 

more words for this could be abiotic and biotic

abiotic: living organisms within an ecosystem

biotic: non-living organisms within an ecosystem