Which part of the cell membrane attracts water molecules? A. The nonpolar interior
B. The polar surfaces
C. The transport proteins
O D. The signal proteins

the polar surfaces since they are hydrophilic, which means water loving.

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

atp is used for energy.