Answer:
Muscle contraction thus results from an interaction between the actin and myosin filaments that generates their movement relative to one another.
The answer is...
<u>Closed</u> ecosystems do not experience any new input or output of energy and/or material.
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The conditions which are most favorable for the formation of radiation fog are warm, moist air over low flat land areas,on clear, calm nights.
Radiation fog is most prevalent during the winter and fall; it usually forms overnight as the air closest air to the ground cool down. When the cooling makes the air to reach saturation point, radiation fog will formed.