18. is a mix of solid and liquid particles in the air, often caused by natural occurrences like a volcano eruption. A.) Carbon monoxide
B.)Particulate matter
C.)Acid precipitation
D.) Photochemical smog
E.)CFC's

PLEASE ANSWER ASAP IMPORTANT

i do not know and i have a 100 in this class

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