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life processes

Extracts from this document...

Introduction

Dear Dr Philip Bland,

        From one simple acronym we can sum up life as we know it and the several life processes in which all living things need or do for survival, ‘Mrs Nerg’.

M ovement

R espiration

S ensitivity

N utrition

E xcretion

R eproduction

G rowth

Life is an active principle of existence of animals and plants. This needs several key conditions to be carried out.

The planets temperature mustn’t be too dissimilar to earths. Earth currently has a temperature of 13 degrees Celsius that is rapidly increasing from global warming to a temperature of 15 degrees Celsius.

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Middle

Obviously water is essential for human and planet life. A good water supply is therefore necessary from both river, lakes and seas and the water cycle in the atmosphere will also help this. Without a good water supply, disruption of the eco-system will take place also causing food shortage. So a renewable water source will keep the co-system in harmony and allow survival.

Gravity is needed to pull things down. Similar planet sizes will have a similar amount of gravity therefore a new planet will need to be of similar size.

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Conclusion

l.  Plants would also be needed to produce oxygen. However there wouldn’t be enough so another oxygen supply should be found aswell.

A magnetic field wouldn’t necessarily be needed as its purpose isn’t very important and something could very easily replace it.

Daylight and darkness hours can change as the people would just have to adapt to them.

Therefore a new planet must have:

  • a temperature between 12 and 16 degrees Celsius
  • water supply
  • similar gravity levels
  • similar atmosphere
  • oxygen supply

                             yours sincerely,

                              Eleanor porter

...read more.

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