Flowing water deposits weathered and eroded material that eventually forms sedimentary rock is an example of an interactions between which earth systems?

What type of lipids are found in all biological membranes?

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).

Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?