Answer:Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. So enzymes speed up reactions by lowering activation energy
Paleontologists can identify organisms that may be ancient relatives of those living today. By looking at fossils they can also suggest how these organisms lived together in an ancient habitat. Few organisms become fossilized because the circumstances that an organism has to be in is very specific.
It's called muscle spasticity. Or in common terms, muscle cramp.
Hope this helps.
I believe the correct answer from the choices listed above is the last option. Life on Earth originated from primitive bacteria. <span> It is generally agreed that all </span>life<span> today evolved by common descent from a single primitive lifeform and the lifeform from the choices is bacteria. Hope this helps.</span>
