a change in a food web can cause damage to an ecosystem
above_statement is not fact_about_ecosystem. alteration_of_food is not danger. result_of_cooking is not food. food_web is organic_phenomenon. bad_food is foundation_for_bad_health. since_1997_web has evolved_into_economy alteration_of_food is danger. food_web is not organic_phenomenon. genetic_alteration_of_food is not danger_to_variation. genetic_alteration_of_food is danger_to_variation.