Its photosynthesis because Plants can do two important things: Use energy from the sun to turn CO2<span> (</span>carbon dioxide) and H2<span>O (water) </span>
Radioactive atoms are inherently unstable; over time, radioactive "parent atoms" decay into stable "daughter atoms." When molten rock cools, forming what are called igneous rocks, radioactive atoms are trapped inside. ... Scientists date igneous rock using elements that are slow to decay, such as uranium and potassium.
Answer: Older fossils have been found and extinct/or animals from older times have had similar characteristics to animals found closer to our time/or the present.
b) warmer, less dense air
Hope I helped! ( Smiles )
