Under the watchful eye of cartel operatives, coca leaves are converted into cocaine, usually in Colombia, Peru, or Bolivia, in
labs near the fields where they're grown.
To confirm that wet weather was indeed behind the species switch - ups, Chang's team ran an experiment in addition to the 13 - year
field surveys, taking panels from the marina and exposing them in
lab to
near - freshwater (wet year),
near - oceanic saltwater (dry year) or medium - saltwater (moderate year).