question: What was Charles Lyell 's perception of what organisms are exposed to in their struggle for survival ?
answer: all organisms are exposed to severe competition
turker_answer: Charles Lyell 's perception of what organisms are exposed to in their struggle for survival was that all organisms are exposed to severe competition .
rule-based: Charles Lyell 's perception of what organisms are exposed to in their struggle for survival was all organisms are exposed to severe competition .