If a contract is broken due to a drought? Is this cosidered a basis of objective impossibility of performance?

Question

If someone offers to grow over 1000 bushels but with a drought that year causes her to grow only 250. Should this person that grew the crop be help responsible for a breach contract?

Answer 1

Impossibility is a defense if there is an unforeseen occurrence that prevents full performance of the contract

Sounds like it would be a valid defense in this hypothetical

Answer 2

the above example is not a contract because there is no consideration. no contract no breach