They should enter the field of Ichthyology, as it is the study of fish.
Oceanography, is a generalized study of the ocean, such as plate tectonics, ocean-life, ecosystems, and other aspects of ocean study.
The answer is Blood clots
I believe the answer is composite volcanos.
a composite volcano is formed over hundreds of years through multiple eruptions. the eruptions build the volcano layer after layer by ash, rock, etc.
hope this helps! :)
Ribonucleic acid, the basic unit of RNA, has a hydroxyl (-OH) on the second carbon atom. On the other hand, the deoxyribonucleic acid, the basic unit of DNA, has a single hydrogen in the second carbon. This chemical structure difference makes RNA heavier than DNA due to the extra carbon atom.
The RNA/RNA-DNA hybrids can be separated from double-standard DNA using a high-resolution centrifuge due to this difference in weight. The image belows shows the extra oxygen atom in the 2' carbon