Oxygen isotopes have been used by geologists and climatologists to determine the occurrences of past ice ages based on the ratio of…
Group of answer choices
CO2 to CH4 in cattle flatulence
Oxygen 18 to Oxygen 16 preserved in the shells of marine organisms.
O2 to O3 in ice bubbles locked in glacial ice.
CO2 to HCO3 in ocean sediments.

Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere, b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify, d)anaerobic bacteria kept thriving with more oxygen

Which scientific design has both practical limitations and limitations due to scale? studying the effect of bleach on the growth of mold spores exposing cultures of duckweed to different intensities of light observing the replication of dna molecules with a hand lens using colored marbles to model a cross between two colors of rabbits