Culisiuolloiluun tuuului uuiuw.
mg(s) + fe2+ (aq) —> mg2+ (aq) + fe(s)
which equation is a half reaction that describes the reduction that is taking place?
o fe2+ (aq) + 2e--> fe(s)
o mg(s) —— mg2+(aq) + 2e
o fe2+ (aq) —> fe(s) + 2e
o mg(s)+2e--> mg2+ (aq)

not sure if this is what you'r looking for nnew= nold

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 

is this a question? wassup

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.