Answer:
Delta waves
Explanation:
Stage 3 and stage 4 are described as slow wave sleep that is marked by a predominance of delta waves
I believe cancer causes death for all age groups because it's something that any age can get
Explanation:
Physical education, also known as Phys Ed., PE, gym, or gym class, and in some Commonwealth countries as physical training or PT, is a class that pupils are required to take at school.
Level of importance that is because you cannot
