APES Semester Exam Review

Front

What is the primary source of energy in an ecosystem?

Back

Producers, such as plants, are the primary source of energy in an ecosystem.

Front

What process describes the absorption of water into the ground?

Back

Infiltration is the process by which water is absorbed into the ground.

Front

What is the most abundant gas in the Earth's atmosphere?

Back

Nitrogen makes up about 78% of the Earth's atmosphere.

Front

What does the term 'Tragedy of the Commons' refer to?

Back

The Tragedy of the Commons refers to the depletion of a shared resource due to individual self-interest, as illustrated by the decline in cod stock.

Front

In a population pyramid, what do the bottom age groups represent?

Back

The bottom of a population pyramid represents children.

Front

What is the role of herbivores in an energy pyramid?

Back

Herbivores are secondary consumers that obtain energy by eating producers.

Front

Define maximum sustainable yield in resource management.

Back

Maximum sustainable yield is the largest yield (or catch) that can be taken from a specific fish stock over an indefinite period under constant environmental conditions.

Front

What is transpiration in the water cycle?

Back

Transpiration is the process by which water is absorbed by plants and released as vapor into the atmosphere.

Front

Explain the concept of positive feedback loops in environmental science.

Back

Positive feedback loops amplify changes; for example, melting ice reduces the Earth's albedo, leading to more heat absorption and further ice melt.

Front

What is the significance of biodiversity in ecosystems?

Back

Biodiversity enhances ecosystem resilience, productivity, and stability.