Question

The heart is a muscle as big as your fist in the centre of
your chest. It is an efficient
1 that can get
blood to the furthest cell in your body within sixty
seconds.
Onits circular journey around the body, blood
2 the heart twice. Once with oxygen and
ońce without oxygen.

Answer 1

Respuesta:

es la respuesta 1 , la de that can get blood