Nan oil spill, why does the oil not mix with the sea water?

lipids are hydrophobic. lipids are hydrophilic. lipids are saturated. lipids are unsaturated.

Answer;

Lipids are hydrophobic

Explanation;

-Lipids are fats, like oil, that are insoluble in water. Lipids are 
soluble 
in
solvents 
of
 low
 polarity, that is, they are soluble in non polar solvents, since they are hydrophobic (water hating).

-
However, there
 are
 categories 
of 
lipids
 that
 are 
both 
hydrophobic 
and 
hydrophilic.

These
lipids
 are
 called
 amphiphiles,
 molecules
 that 
contain 
both 
large
 areas
 of 
polarity 
and
 non-polarity,
and 
are 
thus 
both hydrophilic 
and 
hydrophobic. Phospholipids
 have 
both
 a
 long 
hydrophobic
 hydrocarbon
 tail,
and
 a
 hydrophilic
 head.

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.