Seismic Waves!
Hope this helped :-)
I say A not sure tho but I did get a grade 5 in biology
Answer:
the fine transparent tubular sheath which envelops the fibres of skeletal muscles.
Because the prefrontal cortex is still developing, teenagers might rely on a part of the brain called the amygdala to make decisions and solve problems more than adults do. The amygdala is associated with emotions, impulses, aggression and instinctive behaviour.