4 Put the following events in the most probable order.
(a) Predatory birds poisoned by insecticide.
(b) Trees sprayed with insecticide.
(c) Earthworms eat leaves which fall from trees.
(d) Predatory birds eat small birds.
(e) Beetles damage trees by spreading a virus.
(f) Insecticide absorbed by tree leaves.
(g) Small birds eat earthworms.