What are some fossil findings in recent years that have bridged major gaps in our understanding of vertebrate evolution?

Titaallik

Explanation:

One of the major archeological findings what that of the Titaallik. This is a monospecific genus of extinct sarcopterygian from the Late Devonian Period, roughly about 375 Mya. This species helped help us links marine mammals to their terrestrial ancestors since the Titaallik was a half-species which was a snake with legs. Thus linking modern snakes to their amphibious ancestors from which they descended.

Invasive species are dangerous to the environment because they threaten biodiversity. The correct option among all the options that are given in the question is the third option or option "C". These invasive species kill the native plants or animals and this makes a huge difference to the biodiversity of a place.