Not much directly. Tacos are a type of food and caricatura is a form of art. Maybe they could be combined in some creative or humorous way, but there's no inherent link.
Well, one big difference is the visual style. Manga often has a more detailed and raw look, while anime can add colors and movement. Also, the pacing can be different. Sometimes anime speeds up or slows down the story compared to the manga.
I think it could imply a satirical or humorous drawing depicting a polluted river. It might be used to raise awareness or comment on environmental issues. However, without more context, it's hard to be certain.
The caricatures of Mexican charros usually play up their distinctive equestrian gear and the way they carry themselves. They can be drawn with exaggerated proportions or in funny poses to make them stand out and be more entertaining.
First, sketch an outline of the plane. Make the fuselage long and the wings wide. Then, draw the cockpit, wheels, and tail. Use simple lines and curves for a cartoonish look.