Human Impact Flashcard

Front

What is deforestation?

Back

The clearing or thinning of forests by humans, which leads to an increase in atmospheric carbon dioxide.

Front

How does deforestation affect atmospheric carbon dioxide levels?

Back

Deforestation causes an increase in atmospheric carbon dioxide due to the reduction of trees that absorb CO2.

Front

What is a keystone species?

Back

A species that plays a critical role in maintaining the structure of an ecological community.

Front

What happens when a top predator is removed from an ecosystem?

Back

It can lead to an increase in the population of herbivores, resulting in overgrazing.

Front

What is the relationship between sea otters and biodiversity?

Back

As the sea otter population increases, biodiversity in the ecosystem also increases.

Front

What are the natural sources of methane production?

Back

Natural sources include wetlands, termites, and the digestive processes of ruminants.

Front

What are human sources of methane production?

Back

Human sources include agriculture (especially livestock), landfills, and fossil fuel extraction.

Front

What is overgrazing?

Back

Overgrazing occurs when herbivores consume too much vegetation, leading to land degradation.

Front

What is the impact of invasive species on ecosystems?

Back

Invasive species can disrupt local ecosystems, outcompete native species, and reduce biodiversity.

Front

What is biodiversity?

Back

Biodiversity refers to the variety of life in a particular habitat or ecosystem.