Climate and atmospheric CO2 effects on the balance between C3 and C4 plants have received conflicting interpretations based on the analysis of carbon isotopic fractionation (δ13C) in sediments. But. climate and CO2 effects on the C3/C4 balance and δ13C signal are rarely addressed together. Here. https://www.markbroyard.com/hot-offer-greenery-gatefold-wedding-invitations-discount-mega-find/