Human Impact on Ecosystems

Front

What is the primary source of energy for autotrophs?

Back

The primary source of energy for autotrophs is sunlight, which they use to perform photosynthesis.

Front

Define 'trophic level'.

Back

A trophic level is a position in a food chain or food web, representing the flow of energy and nutrients from one organism to another.

Front

What is acid rain?

Back

Acid rain is precipitation that contains high levels of sulfuric and nitric acids, resulting from the mixing of nitrogen and sulfur compounds with water in the atmosphere.

Front

How does human population growth impact ecosystems?

Back

Human population growth leads to increased resource consumption, habitat destruction, and pollution, which negatively affect ecosystems.

Front

What are CFCs and their environmental impact?

Back

Chlorofluorocarbons (CFCs) are chemicals that contribute to ozone depletion in the atmosphere, leading to increased UV radiation reaching the Earth's surface.

Front

What is the relationship between pollution and human activities?

Back

Pollution is often a direct result of human activities such as industrial processes, transportation, and waste disposal.

Front

Explain the concept of bioaccumulation.

Back

Bioaccumulation is the process by which toxins accumulate in the tissues of living organisms, often increasing in concentration at higher trophic levels.

Front

What is the role of herbivores in an ecosystem?

Back

Herbivores are primary consumers that feed on autotrophs, playing a crucial role in energy transfer within food webs.

Front

What are the effects of ozone layer depletion?

Back

Ozone layer depletion leads to increased UV radiation, which can cause skin cancer, cataracts, and harm to marine ecosystems.

Front

Define 'habitat destruction'.

Back

Habitat destruction is the process by which natural habitats are altered or destroyed, often due to human activities, leading to loss of biodiversity.