to do something forcibly can mean to do something rapidly & a disruption of an ecosystem can cause an extinction ->  a forcible disruption of an ecosystem can cause a rapid extinction  an asteroid is a kind of object & an impact can mean the result of two objects forcibly colliding ->  an impact can mean the result of an asteroid and another object forcibly colliding  an impact can mean the result of an asteroid and another object forcibly colliding & an asteroid impact is a kind of event ->  an asteroid impact is a kind of event where an asteriod forcibly collides with another object  an asteroid impact is a kind of event where an asteriod forcibly collides with another object & an ecosystem is a kind of object ->  an asteriod impact can be a kind of event where an asteroid forcibly collides with an ecosystem  objects colliding can cause changes to those objects & a disruption is a kind of change ->  objects colliding can disrupt those objects  an ecosystem is a kind of object & an asteroid is a kind of object ->  an asteriod and an ecosystem are kinds of objects  objects colliding can disrupt those objects & an asteriod and an ecosystem are kinds of objects ->  an asteroid and an ecosystem colliding can disrupt that asteroid and ecosystem  an asteriod impact can be a kind of event where an asteroid forcibly collides with an ecosystem & an asteroid and an ecosystem colliding can disrupt that asteroid and ecosystem ->  an asteriod impact can be a kind of event where an asteroid forcibly disrupts an ecosystem  an asteriod impact can be a kind of event where an asteroid forcibly disrupts an ecosystem & an ecosystem contains large numbers of living organisms ->  an asteroid impact can be a kind of event where an asteroid forcibly disrupts an ecosystem and the organisms in it  a forcible disruption of an ecosystem can cause a rapid extinction & an asteroid impact can be a kind of event where an asteroid forcibly disrupts an ecosystem and the organisms in it -> an asteroid impact would cause a rapid extinction of organisms