Some of the first organisms to show cephalization were octopuses jellyfish flatworms sponges

What is earths lithospheric plates interact at

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.

What are the pros and cons of quadrat sampling?