Cy
B. Complete the passage with items from the box. One item is extra.
mineral
mineral
The sand
trails
set off
wipes out
alternating blinding evaporates
White Sands is a national park where people can walk over large dunes of what looks like white sand.
The sand is actually formed from crystals of gypsum, a kind of (1)
evaporates
forms in a dry lake bed near the park where rain water collects and then (2)
(3) Alternating hot, cold, dry, and wet weather breaks the crystals into a fine powder. If you visit
this park, be sure to bring sunglasses. The sunlight on the white sand can be (4)_blinding
set off
through the park, sign
on any of the (6)
And before you (5)_ wipes out
the guest book so the rangers know who is walking in the park.