An action potential is caused by an influx of which of these ions into the cell

How does an angiosperm prevent self pollination

Plsss > .< compare and contrast the characteristics of flatworms rounds worms and earthworms

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.