How a cell can end up with mutiple nuclei

Some plants rely on the wind to reproduce an example is it’s important for plants to use the forces of nature to reproduce because 1. 1a white tuft of dandelion seeds 2a spiked burrs surrounding seeds 3a hard shell on a walnut? 2. 1b require pollination to reproduce 2b reproduce only asexually 3b cannot move about freely?

Why is it important that fibrin is insoluble in water?

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?