The argument concludes that the need for artificial fertilizers will be reduced. And why is that? Because these wheat strains will play host to R. bacteria. Now what is the argument assuming? It seems to assume that this R. bacteria will produce fixed nitrogen, which is stated in the first sentence to be essential, or necessary for the wheat to grow. If the R. bacteria fails to produce fixed nitrogen, it is not necessarily true that the need for artificial fertilizers will be reduced.
Comments
The argument concludes that the need for artificial fertilizers will be reduced. And why is that? Because these wheat strains will play host to R. bacteria. Now what is the argument assuming? It seems to assume that this R. bacteria will produce fixed nitrogen, which is stated in the first sentence to be essential, or necessary for the wheat to grow. If the R. bacteria fails to produce fixed nitrogen, it is not necessarily true that the need for artificial fertilizers will be reduced.