In urban areas, water can contain high levels of phosphorus due to use of agents such as fertilizers. What is a possible negative effect of excess phosphorus in the water?
A. Decrease of algae blooms
B. High rates of cellular respiration
C. Development of "dead zones"
D. Increase of aquatic life

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 

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?