Demosponges have siliceous spicules and a network of fibrous protein, spongir, that is similar to collagen. The demosponges are the source of natural household sponges, which are made by soaking dead sponges in shallow water until all the cellular material has decayed, leaving the spongin network behind.

It's the last day of school and everyone is mucking up.

You don't beat people up, so that you can live in a society where nobody would beat you up.

As skewness determines the position of the peak, and hence the length of the balancing tail, it will increase the overcommital of expensive baseload gas[…]