Paleoclimatologists study ice cores to investigate Earth’s past climate. They use methods such as oxygen isotope analysis. Which feature inside the ice are the scientists interested in analyzing and why? A.
They search for the geological layer at which ice turns to water, which is an indicator of past precipitation data.
B.
They seek single-celled microorganisms deep within the ice to assess the efficiency with which they processed oxygen.
C.
They study air bubbles trapped in the ice, comparing their chemical composition between past and present.
D.
They build a temperature and albedo profile of ice and water samples to predict when and where climate change is eminent.

they include patterns; cause and effect; scale, proportion, and quantity; systems and system models; energy and matter; structure and function; and stability and change.

can i get the brainiest answer

i answered it first

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.

i think it's letter a.

idk what is it? is this a question that you know the answer or u dont