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What are the three major phases in the l...

What are the three major phases in the life cycle of an organism? Define each phase.

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a. Juvenile phase
b. Senescent phase
a. Juvenile phase: The phase of growth in the organisms before reproductive maturity.
b. Reproductive phase: In this phase organism attains reproductive maturity.
c. Senescent phase: The phase between reprductive maturity and death.
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