Because she likes him maybe?:L

24 different ways. wow that took a while

turkey- TU

cheese- C

lettuce- L

tomato- T

Tu, C, L, T

Tu, C, T L

Tu, L,C,T

Tu,L,T,C

Tu,C,T,L

Tu,C,L,T

C,TU,L,T

C,TU,T,L

C,L,TU,T

C,L,T,TU

C,T,L,TU

C,T,TU,L

L,TU,T,C

L,TU,C,T

L,C,TU,T

L,C,T,TU

L,T,TU,C

L,T,C,TU

T,TU,C,L

T,TU,L,C

T,L,TU,C

T,L,C,TU

T,C,TU,L

T,C,L,TU

Saturated means it can't hold any more hydrogen's. Unsaturated means it has some double bonds that can open up.

For example:

H H H H H H

l l l l l l

H-C-C-C-C-C-C-H is saturated

l l l l l l

H H H H H H

H H H H H

l l l l l

H-C-C=C-C-C-C-H is unsaturated. It has the double bond

l l l l l

H H H H H

yes it does because

h h h h

l l l l

c-c-c-c

C3H5(OH)3

H H H

l l l

OH - C - C - C - OH

l l l

H OH H