A climatologist wants to gather data about the composition of the air 35,000 years ago. Where might he find an air sample? A. rock sediments

B. alkennone molecule traces from phytoplankton

C. bubbles in ice core samples

D. tree rings

b por d

look up p**n.com there are good answers there to the ** is o and r

bubbles in ice core samples

Explanation:

When water freezes, air bubbles form inside the ice consistent with the atmosphere that existed at the time when it froze. Ice cores samples in ancient glaciers contain air preserved in bubbles that were formed when the ice layer was formed. Scientists have sensitive instruments that can detect the composition of the air inside the bubbles.

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