Answer:
D fleas affect all animals
I think it is a 50-60 percent chance. More boys are produced in the world than females at the moment, which might explain the reason some people are single.
S waves are slower than P waves and they can only travel through solid rock. S waves move the particles it pushes through up and down or side to side (perpendicular to the motion of the S waves energy).
Leads to high pollution that makes global warming more dangerous
