Poaceae groups, using the C3 and C4 photosynthetic pathways for carbon fixation. The C4 grasses have a photosynthetic pathway, linked to specialized Kranz leaf anatomy, which allows for increased water use efficiency, rendering them better adapted to hot, arid environments and those lacking in carbon dioxide. The C3 grasses are referred to as "cool-season" grasses, while the C4 plants are considered "warm-season" grasses. The grass family is one of the most widely distributed and abundant groups of plants on Earth. Grasses are found on every continent, including Antarctica with the presence of Antarctic hair grass on the Antarctic Peninsula. Grasses are
Experiments in the Revival of Organisms at the Museum of Cardiovascular Surgery at the Bakulev Scientific Center of Cardiovascular Surgery in Russia. Brukhonenko was posthumously awarded the prestigious Lenin Prize. Some commentators have questioned the film's authenticity, given that none of the more dubious experiments are shown in any full-frame shots. According to some scientists who claim to have seen the experiments in the film, the severed dog head only survived for a few minutes when attached to the artificial heart, as opposed to the hours claimed in the film. Experiments in the Revival of Organisms Experiments in the Revival of Organisms () is a 1940