Biology of depression. Scientific studies have found that numerous brain areas show altered activity in patients suffering from depression, and this has encouraged advocates of various theories that seek to identify a biochemical origin of the disease, as opposed to theories that emphasize psychological or situational causes.
1 They eat the roots and stems of small and young plants which can cause disease and kill the plants. 2  An often over looked problem that grubs cause is they attract other pests. 3  Many animals eat grubs and that can damage your lawn as well.
How to Treat Grubs in Your Lawn. Grubs, or grub worms, are a common pest problem that affects lawns. These are the larvae of Japanese and June beetles, as well as Chafers. You may be able to get an early read on a grub problem in your lawn if you notice the presence of adult beetles and patches of dying grass.