life processes

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.

The atmosphere provides all the gases we need therefore a new planet must also provide these gases. The atmosphere also contains water vapour that we need for the water cycle. These gases are: Nitrogen, oxygen, argon, carbon dioxide, neon, helium, methane, hydrogen, ozone and nitrous oxide.

If we bring plants with us then we will also be bringing the minerals with them so the minerals shouldn’t be naturally needed in soil as long as they will be able to travel in the plants. This would need to be tested before travel.  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