Mei Li:
The term Paraskavedekatriaphobia informally refers to an irrational fear of what time-related concern??
Shuai Zheng:
friday 13th
Mei Li:
The arctic mountain 'ptarmigan' which changes to white in winter, is a??
Shuai Zheng:
bird
Mei Li:
What species of wasp can reach up to 55 mm (2.2 in) in length??
Shuai Zheng:
hornet