Mei Li:
In April 2003, who became the oldest man to be rated number one in the World Tennis Association rankings at the age of 33??
Shuai Zheng:
andre agassi
Mei Li:
What do we call the layer of the Earth between its crust and its core??
Shuai Zheng:
mantle
Mei Li:
What major group of organisms possess bodily features called operculum, caudal peduncle, and photophores??
Shuai Zheng:
fish