Which topics would be most important for you to understand if you wanted to be certified as a lifeguard? check all that apply. developing evacuation plans diversifying sources landscaping florida-friendly beaches saving people caught in rip currents identifying signs of oncoming tsunamis

A, D, E ( developing evacuation plans ) ( saving people cuaght in rip currents ) (identifying signs of oncoming tsunamis)

Explanation:

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one would be wind another would be water density

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.