18 B 19 C and 20 A
cuz that's it I hope it helps you
Stimuli that can make you run faster:
1. sound: if you hear a wild animal running after you that will make you run faster
2. vision: viewing something scary or unpleasant acts as a stimuli to make you run faster
3. pain: pain as a stimulus will make you run faster as it your bodies way of protecting you from harm
Hope this helps good luck <span />
It is moldm^-3s^-1
^ means raise to power
Answer:
A
Explanation:
Oceanic crust is thinner and more likely to sink
A. Increases as you move from left to right across a period
