According to the article, what changes have occurred over the last twenty years to improve conditions on the Galapagos Islands? Check all that apply.

Cargo ships and tourist luggage are now checked for invasive species.
Park authorities have banned the fishing of sea cucumbers year round.
Goats, donkeys, and pigs have been removed from several islands.
Greenhouses have been installed so fewer ships have to travel to the mainland for food.
Community education programs have taught citizens that invasive species are not harmful.
Recycling centers have been set up for glass, plastic, and cardboard.