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.
The life cycle of the grub begins with eggs laid in July by adult June Bugs, European Chafers or Japanese Beetles. Each species is slightly different, but for the purposes of control and management, they are all the same. The egg hatches and becomes a larva which feeds on grass roots.