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.

The answer is reflection.

This is s cute awee : (( . well if she's showing you signs that she may like you , then shoot your shot ! don't be afraid . & if you're unsure that she's giving you these signs , then wait out for a little bit . most girls are different . some may act really sweet , but only bc you're a good friend of hers . that , or she might like you . you just never know . but i think you should sit down with her & tell her how you feel . but don't be awkward & shy . just be straight up & tell her how you feel . if the feelings aren't mutual , then don't cry about it . you need to respect her decision & look for others in the world . feelings can be difficult & confusing , but don't be afraid to show them . i say you play it out & if you're still unsure about it , talk to her . - rach