Most Fishes Can Either Live in Freshwater or Live in Saltwater

question 28

Multiple Choice

Most fishes can either live in freshwater or live in saltwater habitats, but not in both. If you move a marine fish from the ocean to a lake, it will quickly die, and vice versa. However, a small number of fish species are capable of moving between the two environments. Salmon are osmoregulators that hatch in rivers, spend most of their lives in the ocean, and return to the river where they were born in order to breed.
-When a salmon leaves the river and moves out to sea, you would expect ________ to leave its body by osmosis and that excess ________ would need to be pumped out.

• A) salt; water
• B) water; salt
• C) salt; salt
• D) water; water

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Definitions:

Total Variable

Expenses that change in proportion to the activity of a business, such as costs of goods sold, which vary with the level of production or sales volume.

Average Variable Cost

The variable costs of production (costs that change with output level) divided by the quantity of output, indicating the average variable cost per unit.

Producing Purses

Producing purses involves the manufacturing and assembling of various materials to create handbags and similar accessories.

Average Fixed Cost

The sum of all production fixed costs divided by the number of units produced.