What (cities, states, citizens) will be most affected when the new census is tabulated.

land

explanation:

australia is the flattest continent, and it has vast plains.

heat released by collision processes during accretion, and heat from decay of radioactive elements

explanation:

true. earthquakes are felt whenever there is a slip around a fault in the rocks below the earth. this reorientation of faults create sesmic waves and is known as earthquake, the severity of which is measured in richter scale. these are more prominent in hilly regions as the rocks usually form faults to balance the pressures on it.