Answer:
Adrenaline works directly on receptor cells in muscles to speed up the contraction rate of the fibres, ready for fighting or fleeing. High levels of adrenaline can therefore lead to muscles twitching uncontrollably, making us shake.
Explanation:
B. the number is very important to the paragraph
Answer:
1. I have keys but no locks.
I have a space but no room.
You can enter, but can't go outside.
What am I?
im a comp student so the riddle might be lame lol :'D