Gaza City has come under intense air attack, the territory's Hamas-run civil defence agency has said, as Israeli forces prepare to occupy the city.
Mahmud Bassal, a spokesman, said the residential areas of Zeitoun and Sabra had for three days been hit by bombs and drone strikes that "cause massive destruction to civilian homes", with residents unable to recover the dead and injured.
Meanwhile the UK, EU, Australia, Canada and Japan issued a statement saying "famine is unfolding in front of our eyes" and urged action to "reverse starvation".
They demanded "immediate, permanent and concrete steps" to facilitate the entry of aid to Gaza. Israel denies there is starvation in Gaza.
It has accused UN agencies of not picking up aid at the borders and delivering it.
