This is the formal proof that the square-root of 2 is irrational. This is a proof by contradiction.
Kevin MacLeod: Carefree
NOTE: We're in the process of adding the images back in to all notes pages - please check back soon! Chapter 26: Response in the Flowering Plant Plants have the ability to respond to their environment. Stimulus: anything that causes a response in an organism. Response: activity of an organism or part of an organism…
French website but has the verb conjugations of all the tenses in the following languages: French, German, Spanish, Portuguese and Italian.
For French learners, excersises available with explantion as to why you're wrong.