APES Semester 1 Final Exam Review

Front

What is Gross Primary Productivity (GPP)?

Back

The total rate of photosynthesis in a given area, representing the total amount of organic matter produced by primary producers.

Front

How do you calculate the natural annual percent increase of a population?

Back

Natural annual percent increase = (Crude Birth Rate - Crude Death Rate) / 10.

Front

What does an age distribution that shows a large proportion of young individuals indicate about a country's population growth?

Back

It indicates that the country is experiencing rapid growth.

Front

What is mutualism in ecological terms?

Back

A symbiotic relationship where both species benefit, such as corals and microalgae.

Front

What is the pesticide treadmill?

Back

A cycle where increased use of pesticides is required to control pests that have developed resistance.

Front

Define Net Primary Productivity (NPP).

Back

The rate of photosynthesis minus the rate of respiration in primary producers, indicating the energy available for consumers.

Front

What is the difference between a crude birth rate and a crude death rate?

Back

Crude birth rate is the number of live births per 1,000 people in a year, while crude death rate is the number of deaths per 1,000 people in a year.

Front

What is biomagnification?

Back

The process by which the concentration of toxins increases in organisms at each successive level of the food chain.

Front

What is the significance of primary producers in an ecosystem?

Back

They convert solar energy into chemical energy through photosynthesis, forming the base of the food web.

Front

What does a population pyramid with a wide base indicate?

Back

It indicates a high birth rate and potential for rapid population growth.