Gestation is the time between and .

fertilization and water breaking
conception and birth
conception and implantation

conception and birth

Explanation:

Gestation is the period between conception (when the female sex cell get fertilized by the male sex cell) and birth (when the fertilized egg has become matured for delivery).

It varies from one animal to another. For example: In humans, it is 9 months; In hen, it is 21 days.

the truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey.

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