Since you provide no further information,
That Liquid 2 is very likely to contain alcohol. When the alcohol is ignited, it's not the liquid part that is burning. When the temperature around the alcohol is increased, the liquid will produce Vapors. this vapor is the one that keep burning
Breaking of hydrogen bonds between complementary bases of parent DNA
Phagocytes are cells that protect the body by ingesting harmful foreign particles, bacteria, and dead or dying cells.
The Equator is halfway in between
Geographical variation refers to differences among populations in genetically based traits across the natural geographic range of a species. ... In the simplest case, we divide these factors into purely genetic versus environmental components to tease apart their relative contributions to observed phenotypic variation.