The monarch butterfly population has declined due to a scarcity of(1 point)

Responses

spiders.
spiders.

crops.
crops.

milkweed.
milkweed.

grasshoppers.

1 answer

The monarch butterfly population has declined due to a scarcity of milkweed. Milkweed is the primary host plant for monarch caterpillars, and its decline affects the butterflies' ability to reproduce and survive.