Explanation

Pollination agents include: insects (bees, butterflies – most important), wind (grasses, cereals), birds (some tropical flowers), bats (night-blooming plants), and water (aquatic plants).

Earthworms are NOT pollination agents. They live in soil and improve soil structure but do not transfer pollen between flowers. They belong to soil fauna, not pollinators.

Protecting pollinators (especially bees) is crucial for agriculture. Pesticide use and habitat loss threaten pollinator populations worldwide.