Adult hoverflies are active during the summer, feeding on nectar and pollen to gain energy. Hoverfly larvae are active predators that feed on aphids and thrips, which are common garden pests. Adult hoverflies do not eat other insects. Female hoverflies only have a few weeks to locate suitable pest colonies, lay their eggs, and reproduce before they die.
Based on the provided information, what will happen if the population of aphids decreases?
the population of hoverflies will increase
adult hoverflies will eat more aphids
hoverfly larvae will eat more thrips
adult female hoverflies will produce more pollen