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.
If you have grub worms in your lawn, you'll want to get rid of them before they do serious damage. Grubs are actually several kinds of beetle larvae, such as the Japanese beetle and June bug, that feed on the roots of your grass.This feeding results in brown patches, bare dirt and in extreme cases, a completely dead yard.rubs are actually several kinds of beetle larvae, such as the Japanese beetle and June bug, that feed on the roots of your grass. This feeding results in brown patches, bare dirt and in extreme cases, a completely dead yard.