Helllo can someone help me find the mistakes and put it on a right sentence plzzz

When water freezes, it . contracts expands

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Do the following statements describe actin, myosin, both of the proteins or neither of the proteins? (a) contains a binding site for calcium (b) found in the i band (c) exists in a globular (g) form and a filamentous (f) form (d) contains a binding site for atp (e) is a component of the thin filament (f) is a component of the thick filament