Answer: OT
Explanation: I'm guessing my best but you should search it up on goodle, it might be there :)
When a star is fusing iron in its core, it's still giving off insane amounts of energy. ... Iron cannot be fused into anything heavier because of the insane amounts of energy and force required to fuse iron atoms. The atomic structure of iron is very stable, more so than most other elements.
1. CAUG 2. UUAGGC 3. ACAUCG 4. CGAACAU
Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.