Answer:
B) Valves closing
Explanation:
A healthy heart makes a lub-dub sound with each beat. This sound comes from the valves shutting on the blood inside the heart. The first sound (the lub) happens when the mitral and tricuspid valves close.
Answer:
Type O
Explanation:
This blood type has neither A or B markers.
Hope this helped!
D. This is a myth.
Advertisements are made for businesses and is
done if the product is not selling. It creates a need for the product resulting
in people buying it. Advertisements often include myths about the product to
promote it.
Answer:
all of the above
Explanation:
drugs can make you dependent on them. At a young age your brain is less developed and can become more addicted to stimulants and dependent. Also, if you are dependent on drugs your family and friends can grow more distant from you and will damage your family relationships. Thus, the answer is all of the above
