Ultimate Science Challenge

What weather phenomenon causes more deaths in the U.S. annually than any other except lightning? a. wildfires b. tornadoes c. hurricanes d. tsunamis

What is the name for wood whose cells have been replaced with mineral deposits? a. driftwood b. dead wood c. cellulitis d. petrified wood

Pollination by birds is called... a. autogamy b. ornihophily c. entomophily d. anemophily

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