It's important to consider the safety of jarring food. Eating food that has been spoiled because it wasn't jarred properly correctly can result in the disease botulism.

The restricted sustentive range of manipulations of foreign aid in economic warfare is especially marked. This is due to the state of the domestic law concerning foreign aid; reciprocal controls which a recipient state can exert; and a folk way expectation of economic aid flowing from centers of great productivity, such as the United States, the Soviet Union, and the countries of Western Europe. This folk-way expectation has emerged as a postulate of an obligation to supply the needs of the needy upon which foreign aid reasoning in both donor and recipient states tends to be founded.

You could determine its genotype by performing a testcross. If the plant were homozygous (TT), a testcross would produce all tall progeny (TT × tt → all Tt); if the plant were heterozygous (Tt), half of the progeny would be tall and half would be short (Tt × tt → 1/2 Tt and 1/2 tt). When a testcross is performed, any recessive allele in the unknown genotype is expressed in the progeny, because it will be paired with a recessive allele from the homozygous recessive parent.

By ambuſh’d men, behind their Temple laid, / We have the King of Mexico betray’d.