In alpha decay,
A) a proton turns into a neutron
B) a neutron turns into a proton
C) a proton turns into an electron
D) a helium nucleus is ejected
Question 2
How is intelligence defined in the Drake Equation?
A) a civilization that has developed language
B) a civilization willing and able to communicate over interstellar distances
C) a civilization that communicates using telepathy
D) a civilization capable of spaceflight