A．Charles Darwin.
B．Patrick Matthew.
C．Alfred Russel Wallace.
D．Matthew Wallace.

A．Look it up in her textbook.
B．Search on the Internet.
C．Ask her professor for help.
D．Go to the library.

A．A clever clog knows everything in the world.
B．All the living creatures have the same ancestor.
C．Species can change into other species through natural selection.
D．Ideas are transformative and can be united.