You may have heard that monarch butterflies (and their caterpillars) are "poisonous" to many predators. What makes these insects so toxic?
A. Monarch caterpillars produce cardenolides
in their digestive tracts.
B. Monarch caterpillars use cardenolides
from milkweed to synthesize toxins.
C. Monarch caterpillars ingest milkweed latex
which "chokes" their predators.
D. Monarch caterpillars store cardenolides
from milkweeds.
E. Monarch caterpillars secrete latex from
their bodies.
D
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