What examples of a solid turning into a liquid

Embryos of different species look very similar, which shows that the organisms share a ancestor.

How does the value of the equilibrium constant show that a reaction reaches equilibrium very quickly? (a) the equilibrium constant is large. (b) the equilibrium constant is small. (c) the equilibrium constant is zero. (d) the value of the equilibrium constant does not show how quickly a reaction comes to equilibrium.

The graph shows one consequence of urban sprawl. how did urban sprawl contribute to the change in biodiversity