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Exploring Different Organisms and Their Size

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Exploring Different Organisms and Their Size

Different organisms are of different sizes. If I take an example of

two organisms such as an amoeba, which is a single celled organism and

an elephant, which is a multicellular organism I can see that they are

obviously of different sizes.

[IMAGE]

AMOEBA

Amoeba

[IMAGE]

ELEPHANT

Elephant

Since an amoeba is small it has a large surface area compared to its

volume. Since an elephant is large its surface area is small in

comparison with its volume.

As can be seen below if one increases the surface area of an object,

the total volume increases but the surface area: volume ratio

decreases.

3cm

[IMAGE]

2cm

[IMAGE] 1cm

[IMAGE]

Total SA= 6

24 54

Total Vol= 1

8 27

SA:Vol= 6:1

3:1 2:1
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