T-rex lived in the Late Cretaceous period during the Mesozoic era. Dunno if this was precisely what you were looking for, but I hope it's helpful!
The slow rate at which diffusion occurs over large distances.
Answer: simple inorganic molecules to sugar
Explanation:
Through the process of photosynthesis plants use the green coloured pigment named chlorophyll present in their leaves to trap sun light (solar energy) alongside other simple inorganic molecules like atmospheric carbon dioxide and water to produce sugar molecules (usually glucose) which is later stored as starch.
