The follicular phase begins with an increase in follicle-stimulation hormone (FSH), which causes increases in luteinizing hormone (LH) and gonadotropin-releasing hormone (GnRH). Concurrent increases in estrogen levels cause increases in progesterone, stimulating proliferation of the endometrium.
Examples of insulators include plastics, Styrofoam, paper, rubber, glass and dry air. The division of materials into the categories of conductors and insulators is a somewhat artificial division. It is more appropriate to think of materials as being placed somewhere along a continuum.
Report Abuse. Aluminum is a good conductor of electricity. A common material that isn't conductive is glass but glass will conduct heat. Wood isn't heat conductive or an electricity conductor but has a low combustion point.eport Abuse. Aluminum is a good conductor of electricity. A common material that isn't conductive is glass but glass will conduct heat. Wood isn't heat conductive or an electricity conductor but has a low combustion point.