In the graph, which letter represents the activation energy of a reaction without an enzyme and why? A. Y; the activation energy is greater in an uncatalyzed reaction

B. X; the activation energy is reduced in a catalyzed reaction

C. X; the activation energy is greater in an uncatalyzed reaction

D. Y; the activation energy is reduced in an uncatalyzed reaction

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 

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.

sorry, is there a picture? i do not see any arrows.

wut? unius0123 wut?

yes, because even though a theory has a  lot of evidence to support it, it is not always true