Paragraph 2
The scientists did research in a Costa Rican
. They observed insects flying around artificial lights. Insects usually use the
to fly in straight
. However, around the artificial lights, the bugs became
and flew in arcs. An
said: "Natural sky light…helps maintain proper flight….Artificial
…can produce continuous steering around the light and trap an insect." This explains why so many insects fly to their
into bug zappers. Artificial light damages insects'
to find a mate, forage for
, and defend itself against
.