If the Flow of Energy in an Arctic Ecosystem Goes

question 33

Multiple Choice

If the flow of energy in an arctic ecosystem goes through a simple food chain, perhaps involving humans, starting from phytoplankton to zooplankton to fish to seals to polar bears, then which of the following could be true?

• A) Seal populations are larger than fish populations.
• B) Fish can potentially provide more food for humans than seal meat.
• C) Polar bears can provide more food for humans than seals can.
• D) The total biomass of the fish is lower than that of the seals.
• E) Seal meat probably contains the lowest concentrations of fat- soluble toxins.

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Definitions:

Simplify

To reduce something to its basic or essential form, often by removing complexity.

Algebraic Expression

An expression consisting of constants, variables, coefficients, and operating symbols (like +, -, *, /) that represents a mathematical relationship or a rule.

Like Terms

mathematical expressions that have the same variable raised to the same power.

Simplify

To make something less complex or easier to understand, often used in mathematical or problem-solving contexts.