Answer:
The users of social media have become the product of social media.
Explanation:
The largest source of revenue for social media is advertisement, they use the pay-per-click revenue model. Another source of revenue is by offering users a basic service for free but then charging money for a more complete and advanced premium service.
<u>Solution and Explanation:</u>
The Journal Entries in the books of Brock's water enterprise is as follows :-
Date Particulars and details Debit($) Credit($)
Jan 5, 2018 Intangible Assets - Lease 905861
Lease Payable 905861
(Being Record the Lease)
Jan 5, 2018 Lease Payable 125000
Cash 125000
(Being Record Down Payment)
Dec 31, 2018 Amortization Expenses ($905861divide 10) 90586
Accumulated Amortization 90586
(Being Record the amortization)
Jan 5, 2019 Lease Payable 
62531
Interest Expenses 
62469
Cash 125000
(Being Record the Second Lease Payment)
Answer:
$90,000 loss on disposal
Explanation:
If the current year's depreciation of $45,000 is recorded, the loss on disposal will be $45,000 multiplied by 2 which is $90,000
Opportunity costs are the measures of things you must give up when you make a certain decision.
In this case, if country A decides to produce all petroleum, they are choosing not to produce 8 units of seafood. This is their opportunity costs because they are giving up the 8 units of seafood to make petroleum.
The same is true for country B. If they choose petroleum, they are giving up the ability to make 8 units of seafood.
