Question

O U E S T I O N S

1*Why is diffusion insufficient to meet the oxygen requirements of multi-cellular organisms like humans?

2*What criteria do we use to decide whether something is alive?

3*What are outside raw materials used for by an organism?

4*What processes would you consider essential for maintaining Life?

Answer if u know the answer​

Answer 1

Answer:

1. cause in multicellular org. diffusion is not possible

2.by checking the veins

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