(◠ᴥ◕ʋ) Hi! Let me help you there.
༎ຶAnswer༎ຶ
\\ᗒZEROᗕ//
(｡◕‿◕｡)➜ sea level should
represent
an elevation of zero. So
the person sailing would
be at zero because he's
sailing on the surface of
water, whish neither above
or below the surface . On
the number line zero is the
point or number
separating positive and
negative integers.
hope it helps you and keep learning
★QUEENDEATHHELL★
