your momma destroyed the plants
It's not that there is anything in caffeine that kills plants, it is the caffeine itself. Caffeine is a toxin produced by some plants to ward off predators, but is lethal to plant cells when artificially introduced.
No, spinach does not contain caffeine. While some plants like coffee beans and tea leaves naturally contain caffeine, spinach is not one of them.
their are some myth that caffeine can affect plants bad or good
Caffeine is contained in several plants, especially some plants used to prepare drinks - such as coffee, tee, guarana, yerba mate.
Plants produce caffeine as a chemical defense against herbivores and insects. The caffeine acts as a natural pesticide that deters these animals from feeding on the plant's leaves or fruits.
Caffeine occurs naturally in a number of plants. The most well-known of these are tea, coffee, and the cocoa plant. Coffee and tea contain more caffeine than the cocoa plant, which just contains small amounts. There are other plants, however, which naturally contain caffeine. These include yerba mate, guayusa, and yaupon, which are all species of holly. A few other species of holly also contain some caffeine. Another unrelated plant (related to maple trees actually), called guarana, contains caffeine. There may be others but these are the only plants that I know of that contain caffeine.
80ml
Caffeine is naturally occurring in a wide variety of plants, including tea and coffee. There are also more esoteric plants which contain caffeine, including Yerba Mate, Guayusa, Yaupon, and Guarana. Chocolate (from the Cacao plant) also contains a trace of caffeine.
Carbon dioxide. The plants extract the carbon and release oxygen.
Caffeine was not invented. It is a naturally occurring compound found in many plants, including coffee, tea, and cocoa. The plants produce it as a type of pesticide, as it kill many kinds of insects.
Caffeine is a natural compound found in plants like coffee beans, tea leaves, and cacao beans.
Nearly all caffeine is obtained from natural sources. Many plants (~60+) produce caffeine as a natural part of their biochemistry. Since caffeine is a natural pesticide, it seems logical that plants that produce it would have an advantage in resisting pests. The biggest sources are probably coffee beans, tea leaves, and kola nuts.