State the difference between demand and supply.

here are the answers for Question 9 and Question 10:

Question 9:
The aid to trade which gives security cover to businesses when they lose money through any accidents is insurance.

$$\boxed{\text{Insurance}}$$

Question 10:

• Demand refers to the quantity of a good or service that consumers are willing and able to purchase at various prices. It represents the buyer's side of the market.
• Supply refers to the quantity of a good or service that producers are willing and able to offer for sale at various prices. It represents the seller's side of the market.

$$\boxed{\text{Demand is what buyers want to purchase; supply is what sellers want to offer.}}$$