Question

Write correct word in the blank space from bracket.
1. A tissue is made up of
(muscles / cells).
2. An organ is made up of
(cells / tissues).
3. An organ system is made up of
(several organs / heart, lungs).
4. The blood returns to the heart through blood vessels called
(arteries / veins).
5. Waste materials from the blood are removed by the
(stomach / kidneys)​

Answer 1

Answer:

cells

tissue

several organs

arteries

kidney

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Answer 2

Answer:

1.cells

2.tissues

3.several organs

4.arteries

5.kidney