Answer to Question 1
Both trial balances show whether or not the debits and credits are equal. The trial balance before closing contains the asset, liability, owner's equity, revenue, and expense accounts. The post-closing trial balance is prepared after closing and contains only the real (permanent) accounts (asset, liability, and Capital accounts). The nominal (temporary) accounts are closed and do not have a balance. Also, the trial balance before closing does not have the current balance of the owner's Capital account. The post-closing trial balance has an updated Capital account balance which includes net income (loss) and withdrawals.
Answer to Question 2
Internal sources of liquidity include the cash received from selling products and services; external sources of liquidity include cash received from outside sources such as borrowing or selling the firm's stock to raise funds. A material deficiency in liquidity means that a firm may not have enough cash to make it through another operating cycle. If a firm has a material deficiency the firm must discuss how this deficiency will be remedied so that bankruptcy will hopefully be prevented.
The thorax of apes, including humans, is broad but shallow in contrast to the narrower, deeper chest
Early in the twentieth century, when malnutrition was common, companies such as this one advertised
Nitrogen Balance and Imbalance
Normal (A) and Abnormal (B) Balance between Dopamine and Acetylcholine
Acid–Base Balance