The process when molecules tend to move from an area of high concentration to an area of low concentration.

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

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.

How does science influence the decisions made about social, economic, and political issues?