Cyanobacteria have been engineered to produce isobutanol directly. what advantage does this have over other alternative biofuels? a. it is an inherently renewable fuel source. b. multiple processing steps can be avoided. c. they produce chemical energy through photosynthesis. d. they make a biofuel alternative to gasoline.

the national congress's powers over the states were specific and definite: it had the sole power to negotiate treaties, declare war, and make peace. all powers not granted to congress were reserved for state governments. congress had no power to levy taxes, for example.

answer is b.

  it is always the best policy to have good communication and good relations between individuals and, specially, between leaders of the countries. for this purpose, among others, there is a common place, the united nations, where the representants can present his and learn about the other country's policies.