logic is different from biology but it is also similar to biology

 A  conception of logic takes logic to be the study of special truths, or facts: the logical truths, or facts. 

In this sense logic could be understood as a science that aims to describe certain truths or facts, just as other sciences aim to describe other truths. 

The logical truths could be understood as the most general truths, ones that are contained in any other body of truths that any other science aims to describe. In this sense logic is different from biology, since it is more general, but it is also similar to biology in that it is a science that aims to capture a certain body of truths.