PLEASE HELP WILL MARK BRAINLIEST!! What is true about ice cores?

Ice cores can determine how the environment has changed

Ice cores can help scientists create a record of the local climate for thousands of
years

Ice cores can tell how concentrations of atmospheric gases have changed

All of the above are true

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 

answerall of the above;

answer; autosomal;

the two new cells are called daughter cells