Investment question

Is it correct:

1. What does operating activities mean when you say that in your lecture to cashflows?

2. What does operating and non-operating activities refer to?

3. Is it true that operating activities are those usual trading activity of the business from which the business earn its revenue and pay its expenses?

4. Could you please tell me how many investment sources are available to a company?

5. Could you please tell me that companies raise money to invest in non-current assets and current assets respectively so those assets will earn profits for the business?

6. Is it also true that a business is allowed to lend money to other businesses then it will be part of our investment as current assets in SOFP but a business is allowed to lend money to public because only banks can do that not limited companies?

7. Bank deposits are considered investment as current asset in balance sheet? Are they current or non-current investment?

Thanks in advance !