Pretty brunette having fun with her boyfriend at home. Take a look at this hot chick posing dressed and undressed, taking her sexy panties off and flashing great round ass from behind. See her juicy pussy between round huge buttocks close up on camera. Enjoy exciting views of her wet pink vagina being fucked by big dick of her lucky boyfriend. Awesome homemade porn shots for your pleasure 2.
That's a goof question. I haven't looked into whatever process they might be using. There's more techniques for reducing biomatter to fundamental gasses than there are different sources of biomatter. Most require some input of electrical, chemical, mechanical energy. There's some pretty efficient ways to produce bio-diesels, biogasses from algae, because most of the required energy can be provided by sunlight. I can only speculate what's required to grow, harvest, process fish biogas. (Or even what parts of what types of fish are used). How efficient or readily available respective commodity fuel might be is anybody's guess.