Which foods came to the us from africa? which american foods were adapted by africans into new dishes?

a sample of water is taken and kept in a beaker in a freezer at a constant temperature of 0°c. if the system is at dynamic equilibrium, which of these statements is true?  

i believe a   because i took this test last month

c

that should be it

sdcsdfa;

srry

no estoy del todo seguro, pero creo que es un