The proliferation of cyanobacteria was a major contributing factor to the appearance of advanced organisms. identify the gas released by the cyanobacteria that supports this statement

a.) ferrous oxide
b.) oxygen
c.) hydrogen

Adescription of a type of bio biotechnology (genetic engineering, cloning, or artificial section) one benefit or one risk for the individual (based on whether you are for or against it) one benefit or one risk for society (based on whether you are for or against it) one benefit or one risk for the environment (based on whether you are for or against it)