Frogs are beneficial for mankind,justify the statement.

(N/A) Frogs are considered beneficial to mankind for the following reasons:
$1$. They are an important link in the food chain and ecosystem. They act as predators of insects and pests,thereby controlling their population.
$2$. They protect crops from damage by feeding on harmful insects.
$3$. Frogs are widely used in biological and medical research as laboratory animals for dissection and physiological studies.
$4$. In some cultures,frog legs are consumed as a source of protein.