Do living things inherit their adaptations OR do they develop adaptations in response to changes in the environment?

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen

The science for classifying and naming organisms is known as

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm