It's typically divided into four sub-disciplines: physical oceanography (the study of waves, currents, tides and ocean energy); geological oceanography (the study of the sediments, rocks and structure of the seafloor and coastal margins); chemical oceanography (the study of the composition and properties of seawater.
<span>C) Wood may be replenished by planting new trees to replace those being used</span>. because renewable means it can be grown or replaced in some way like solar energy
