Question

2
True or false
i.
ii.
All tightrope walkers need balance diet.
Roughage is not digested because it contains the cellulose wall of plant cells.
The amount of carbon dioxide breathed out is the same as that breathed in.
Arteries have thick muscular walls to cope with the high pressure of the blood as it
leaves the heart.
iv.
Capillaries have valves in them to keep blood flowing in the right direction.​

Answer 1

Answer:

1)true

2)false

3)true

Explanation:

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Answer 2

Answer:

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