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Respiration
Breaking down organic molecules in cells to release energy
Excretion
Removing waste products such as carbon dioxide and urine
Give 3 characteristics of living organisms
they respire
They move
They reproduce
Why do organisms respire
Respiration allows them to release energy from their food
Why do organisms move?
They move towards vital things such as food and water and away from threats such as poisons and predators
Why do organisms reproduce?
To ensure the survival of the species