What is the process called when the end products of digestion enters the blood stream though the small intestine

The idea of spontaneous generation was disproved by in a experiment involving jars of meat

Several billion years ago which gas was the least prevailant in the atmosphere

Recombinant dna is the merging of dna from unrelated organisms to create new genetic varieties is assembled in the lab from mononucleotides was part of the green revolution of the 1960s is pollination of one plant by another of the same species is cross-pollination of one plant by a different species