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Look at a sample to see if it is made of cells. The cell theory tells us that all living things are made of cells.

2007-10-02 11:40:10 · answer #1 · answered by ecolink 7 · 0 0

cells, anything living has at least a nucleus, cytoplasm and a cell membraine, in addition, only living things are capable to do 7 different things that can also b looked at to spot the difference between non living and living which are:

Movement
Respiration
Sensitivity

Growth
Reproduction
Excretion
Nutrition

2007-10-02 11:51:01 · answer #2 · answered by JMCG 3 · 0 0

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