Questions

No improvement is required. Loan is a temporary provision of money, usage is correct. Debt is an obligation. Demand is a claim to something owed. Advance is a supply in expectation of repayment.

I am a Window, allows people to see through walls.

Oceania is a geographic region comprising Melanesia, Micronesia, Polynesia and Australasia. In Oceani, most towns began as Colonial Ports.

The required 7 letter English word is NOTHING.

Arteries carry oxygenated blood away from the heart to the tissues, except for pulmonary arteries, which carry blood to the lungs for oxygenation (usually veins carry deoxygenated blood to the heart but the pulmonary veins carry oxygenated blood as well).

Bile contains bile acids, which are critical for digestion and absorption of fats in the small intestine. Since bile increases the absorption of fats, it is an important part of the absorption of the fat-soluble substances, such as the vitamins A, D, E, and K. Besides its digestive function, many waste products, including bilirubin, a byproduct of red blood cells recycled by the liver are eliminated from the body by secretion into bile and elimination in feces.