In an Aquatic Ecosystem,a Secondary Carnivore Is Temporarily Excluded and Then,after

question 48

Multiple Choice

In an aquatic ecosystem,a secondary carnivore is temporarily excluded and then,after a period of time,is returned.Which one of the following is NOT an expected top-down effect after it is returned?

• A)Primary carnivores become less abundant.
• B)Primary productivity increases.
• C)Algae decrease.
• D)Herbivores become more abundant.

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Definitions:

Pollution

The introduction of harmful substances or products into the environment, resulting in negative effects on life and health.

Real Market Prices

The actual selling price of goods and services in the market, reflecting supply, and demand without distortion by subsidies or taxes.

Hydrogen Fuel

A clean energy source that produces only water when burned, used in fuel cells or internal combustion engines.

Recycling Technologies

The range of techniques and processes used to collect, process, and repurpose waste materials into new products, reducing the need for raw materials.