Waves transfer energy. Mechanical waves, such as ocean waves and sound waves, move through some type of matter, called a medium, while another kind of wave can travel through a vacuum. What type of wave
can move through a vacuum?

electromagnetic, or light, waves can move through a vacuum

Explanation:

electromagnetic DUN DUN DUN

Explanation:

stay safe 2021

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

yes, because even though a theory has a  lot of evidence to support it, it is not always true