* DNA stands for Deoxyribonucleic acid and contains the instructions for making . * The structure of a DNA molecule is a which is like a twisted ladder.

The deserts of the sahara and australia are associated with

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

45 points how are people today being protected from tsunamis? earthquake data is analyzed to detemrine if a tsunami is likely, and if so, warnings are sent out. areas in tsunami risk zones are no longer heavily populated. radar is used to measure wave heights regularly. meteorologists study the winds to determine if wave heights will be large.