Question

3. Choose the correct answer.
stem helps us to bend.
Science
a.
(4) muscles
The heart pumps blood through:
(1) nerves
(2) blood vessels (3) windpipe
b. The organ system that helps break down the food we eat:
(1) respiratory
(2) circulatory
(3) digestive
(4) nervous
c. Many tissues together make:
(3) an organ system
(4) a blood vessel
d. A part of the excretory system:
(2) lungs
(3) stomach (4) a pair of kidney
e. It carries oxygen to all parts of the body:
(2) blood vessels (3) blood (4) lungs
ary
(1) a muscle
(2) an organ
(1) brain
(1) heart​

Answer 1

Answer:

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Answer 2

Answer:

1-(2)

2-(3)

3-(1)

4-(4)

5-(3)

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