The Quiz: What clues do researchers use to track how many giant pandas are left in the wild?
A Infrared signals from heat sensors
B Bitemarks on undigested bamboo
C Fur samples caught on bamboo
Yes, lucky researchers must scramble through mountainous bamboo forests searching for panda poop. Each panda has a distinctive bite, so the scientists look for that mark on undigested bamboo. (Hey, somebody has to do it.)
The correct answer to this quiz is Bitemarks on undigested bamboo.