Jose is a race car driver and contracted with peter to race peter's car in an upcoming car race. the night before the race, peter's car caught fire, was severely charred, and was inoperable. what concept would allow jose to be excused from performing under the contract?

Impossibility

Explanation: Impossibility is the excuse term under the contract which describes about duties that cannot be completed by one or more parties under the normal conditions in accordance with contract law .This excuse usually arises due to the unavoidable circumstances  such as injury of the participant, failure of the subject, destruction of the field etc.

The situation mentioned in the question also depicts about the impossibility. As Peter's car got burnt , so he cannot perform in the race as car is not operable in the situation.

the invasive species was introduced due to commercial purpouses, as there was a demand for fur clothes and hence, a business opportunity connected to this product. actually, it was when the nutrias scaped, causing harm to the us ecosystems when they acquired the status of invasive species. in this case they have caused an environmental problem, but it could have affected also economic interests or even human health.