A public good is a product or service that one consumer cannot prevent another consumer from using, and is accessible without payment.
Escape velocity, stillness is possible
An estuary is often a stopover location for millions of migrating shorebirds that need to stop and fuel up on the invertebrates living in the mudflats.
Ecosystems include all the organisms, their physical and chemical environment. The intrinsic value of the ecosystem is self-ascribed which means that its intrinsic value is conferred by its own desire to take its lived experience as an end in itself. An estuary establishes its intrinsic value in this example showing how it is utilized in the ecosystem.
Crossroads, a sad vaudeville by Carlos Solorzano who comes from Guatemala. The quote relates to how the woman learn about how the man is looking for a young and beautiful girl like in the picture he has. When the woman realizes the man doesn't recognize her when she lifts her veil -despite having given him hints that she was the woman in the picture- she learns she can never be the woman in the picture so she leaves.