In the year 1758, linnaeus's system classified nature into animals, plants, and minerals. today we use the same system but classify only living matter. which characteristic of science does this highlight? 1 ancient scientific knowledge was more reliable. 2new evidence modify scientific systems. 3scientists have failed to classify the living world. 4in science, minerals are a part of the living world.

The correct answer is 2.

The scientific knowledge is constantly growing. The main advantage of the scientific method is that nothing is absolutely true and unquestionable. 
With each new hypothesis and experiment, scientists get a little bit closer to the truth about the natural world. Some parts of the scientific knowledge stand through time and new experiments only confirm them. But often, the new research finds new aspects or disproves parts of the previous finds, so the understanding of that phenomenon changes.