1) don't use antibiotics unless necessary
<span>2) always complete the course </span>
<span>3) dispose of any unused antibiotics by returning them to the drug store or chemist </span>
<span>4) use soap not antibiotic hand wash</span>
What do you mean <span>In the Waves lab you changed to see how it would affect wave speed</span>
<span>B. The first plants lived on the land.</span>
