Why does water form a spherical shape on wax paper, instead of spreading out flat? Heat capacity makes water molecules release e
nergy. Heat capacity makes water molecules absorb energy. Surface tension makes water molecules sticky. Surface tension attracts water molecules inward.
I think the answer would be c. because for birds with longer beaks, it was easier to eat seeds off a cactus (for example), and for birds with shorter seeds, it was easier to eat seeds off the ground.
