Unconventional oil is petroleum produced or extracted using techniques other than the conventional (oil well) method. Oil industries and governments across the globe are investing in unconventional oil sources due to the increasing scarcity of conventional oil reserves.nconventional oil consists of a wider variety of liquid sources including oil sands, extra heavy oil, gas to liquids and other liquids. In general conventional oil is easier and cheaper to produce than unconventional oil.
There are three major types of skin cancers: basal cell carcinoma (BCC), squamous cell carcinoma (SCC), and melanoma. The first two skin cancers are grouped together as non-melanoma skin cancers. Other unusual types of skin cancer include Merkel cell tumors and dermatofibrosarcoma protruberans.
SKIN CANCER. Skin cancer is the growth of abnormal skin cells that are capable of invading and destroying other cells. It is the single most common type of cancer found in humans. The cause of most skin cancers is unknown, but overexposure to UV radiation (in sunlight) is a risky factor.Basel cell cancer is the most common for skin cancer, it covers 75% of skin cancer. It is the least cancerous however.n the form of skin cancer, basel cells in the epidermis are altered so they don't produce keratin. Also, it spreads invading dermis and subcutaneous layers. On sunexposed areas of the face, shiny dome-shaped lesions develop. The next common areas are the ears, backs of hands, and shoulders and arms.