The SA node sends out regular electrical impulses from the top chamber )the atrium) causing it to contract and pump blood into the bottom chamber (the ventricle).
Answer:
It very good to talk to someone that you really trust when you feel sad or alone.
Explanation:
Trust me, do not do the same mistake I did, I keep everything to myself and its very bad.
But everyone has different opinions so do what is best for you
Answer:
true
Explanation:
The can be pressure which leads to stress
Answer:
C. Daisy cries initially seeing unknown faces at the daycare due to stranger anxiety.
Explanation:
Since Daisy is used to her mother and her mother always protects her, it is c.
Answer:
true
Explanation:
marijuana is not addictive
