Practice Review_ Environmental Science Post Test

Front

What is the primary reason for the rapid growth of the human population over the past 100 years?

Back

An increase in food supplies and better access to clean water.

Front

What condition is caused by carbon dioxide, methane, and water vapor trapping heat in the Earth's atmosphere?

Back

Greenhouse effect.

Front

What does an energy pyramid represent in an ecosystem?

Back

It shows the distribution of energy among trophic levels, with energy decreasing from producers to consumers.

Front

Which country had a higher proportion of young people (ages 0-14) in 2012, Afghanistan or the United States?

Back

Afghanistan.

Front

What is the natural nutrient enrichment of a shallow lake, estuary, or slow-moving stream called?

Back

Eutrophication.

Front

Define 'Eutrophication'.

Back

The process by which a body of water becomes overly enriched with nutrients, leading to excessive growth of algae.

Front

What is the greenhouse effect?

Back

The warming of Earth's surface due to the trapping of heat by greenhouse gases in the atmosphere.

Front

Explain the concept of an energy pyramid.

Back

An energy pyramid illustrates the flow of energy in an ecosystem, showing that energy decreases at each trophic level.

Front

What are the main greenhouse gases?

Back

Carbon dioxide, methane, and water vapor.

Front

What is the significance of population pyramids in understanding demographics?

Back

Population pyramids visually represent the age and sex distribution of a population, helping to identify trends.