You spelled Pangaea wrong and it is the <span>Glossopteris</span> fossils that occur
<span>The reaction to it promotes social unity.</span>
4 is c and 5 I think is a
A cross bridge cycle occurs when actin (A) combines with myosin (M) and ATP to produce force, adenosine diphosphate (ADP) and inorganic phosphate (Pi). The cross bridge cycle is a series of molecular events that occur after excitation of the sarcolemma.
The valine of the third could be trapped in one of the unoccupied hydrophobic pockets of the other two.
