Answer:
Oceans, lakes, any large bodies of water.
Explanation:
In terms of country populations, oceans separate the different populations from each other.
With each contraction cycle, actin moves relative to myosin. ... ATP can then attach to myosin, which allows the cross-bridge cycle to start again; further muscle contraction can occur. Therefore, without ATP, muscles would remain in their contracted state, rather than their relaxed state.
Molecular homology, because it compares dna
B. An ecosystem in which plant roots are submerged during parts of the years
