A prairie grass may experience grazing herbivores,wildfires,droughts,deep snow,or blazing hot days in the summer.Yet,those prairie grasses alive today are descendants of those that have survived these challenges and more.From an evolutionary perspective,these sorts of environmental challenges are identified as

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The challenges mentioned in the passage, such as grazing herbivores, wildfires, droughts, deep snow, and blazing hot days, are all examples of selective pressures. These are environmental factors that exert pressure on a population, favoring individuals with certain traits that allow them to survive and reproduce, and leading to the evolution of those traits in the population over time.

A Prairie Grass May Experience Grazing Herbivores,wildfires,droughts,deep Snow,or Blazing Hot