Unit 6 Practice Questions

Front

What is the primary source of energy for plants like grass?

Back

The Sun.

Front

What is biodiversity?

Back

Biodiversity refers to the variety of life in a particular ecosystem, including the number of different species.

Front

What is a keystone species?

Back

A keystone species is a species that has a disproportionately large effect on its environment relative to its abundance.

Front

What happens to an ecosystem when biodiversity is reduced?

Back

It can lead to reduced ecosystem resilience, making it less able to recover from disturbances.

Front

What is the impact of human-induced climate change on ocean acidity?

Back

Human-induced climate change increases ocean acidity.

Front

What are algal blooms?

Back

Algal blooms are rapid increases in the population of algae in water bodies, often due to excess nutrients.

Front

What is agricultural runoff?

Back

Agricultural runoff is water from rain or irrigation that carries fertilizers, pesticides, and other pollutants from agricultural land into nearby water bodies.

Front

How does the loss of a keystone species affect other species in an ecosystem?

Back

It can lead to a collapse of the ecosystem structure, affecting many other species.

Front

What is ecosystem resilience?

Back

Ecosystem resilience is the ability of an ecosystem to recover from disturbances or changes.

Front

What are dead zones in ocean systems?

Back

Dead zones are areas in the ocean with very low oxygen levels, often caused by nutrient pollution leading to algal blooms.