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Arrange the following structures from largest to smallest, assuming that they belong to two generations of the same angiosperm.
1) ovary
2) ovule
3) egg
4) carpel
5) embryo sac
Internal Validity
The accuracy with which a study can pinpoint one of various possible factors as the cause of a phenomenon.
External Validity
The degree to which the results of a study may be generalized beyond that study.
Alcohol
A psychoactive substance commonly found in beverages such as beer, wine, and spirits, known for its depressant effects on the central nervous system.
Pregnancy
The condition of being pregnant, involving the development of a fetus inside a woman's uterus.
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