This is a worksheet with 15 fill-in-the-blank questions that go along with the NOVA program, "Journey of the Butterflies"
(originally aired on November 30, 2011)
Yet another serious threat to the monarchs is the use of "Roundup Ready" GMO crops, which is killing off milkweed - which the butterflies depend on for food. Read about that here:
"In Midwest, Flutters May Be Far Fewer"
biology environment, ecology, migration, NOVA