Which of the following is a type of wave that does not need a medium though which to travel?
a. equilibrium
b. longitudinal
c. amplitude
d. transverse

Solutions to environmental problems in europe must

What are they five steps of cloning?

The human body needs energy in order to carry out life processes such as breathing. where does the body get this energy? a. from eating food b. from learning about new things c. from lying in the sun d. from sleeping