Describe the disadvantages of an open circulatory system relative to a closed circulatory system.

What happens when a magniseum ion ia atracked to a chlrene ion

This rapid change in species that rarely leaves behind fossil evidence is referred to as

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