<span>Before saving a document in an earlier Word format, you want to ensure that all of its elements are c</span>ompatible <span>with earlier versions of Word.</span>
Humans gave up razor-sharp claws, fangs, sense and instincts in favor of intelligence. This brain-power has enabled humans to make the ultimate adaptation; that of making the environment adapt to us. We have domesticated crops and livestock, we irrigate, we wear clothes, build shelters, air-condition or heat our homes.
