24 Midterm Review

Front

What is dissolved oxygen and why is it important for aquatic life?

Back

Dissolved oxygen is the amount of oxygen that is present in water. It is crucial for the survival of fish and other aquatic organisms, as they rely on it for respiration.

Front

What role does a Herring gull play in its ecosystem?

Back

The Herring gull is a scavenger and predator, helping to control populations of smaller animals and clean up waste in its environment.

Front

What does ppb stand for and how is it used in environmental science?

Back

ppb stands for 'parts per billion' and is a unit of measurement used to describe the concentration of a substance in a solution, often used in assessing soil and water quality.

Front

What is ecotourism and how does it promote environmental awareness?

Back

Ecotourism is responsible travel to natural areas that conserves the environment and improves the well-being of local people. It promotes awareness by educating tourists about conservation and the importance of protecting ecosystems.

Front

How does decreased rainfall affect biodiversity in ecosystems?

Back

Decreased rainfall can lead to reduced water availability, which may cause plant stress and loss of species, ultimately reducing biodiversity in affected ecosystems.

Front

What is the maximum permissible concentration of arsenic in soil according to standards?

Back

The maximum permissible concentration of arsenic in soil is 25 ppb.

Front

What is the impact of overfishing on marine ecosystems?

Back

Overfishing can lead to the depletion of fish populations, disrupt food chains, and negatively affect the overall health of marine ecosystems.

Front

What is the significance of soil quality standards?

Back

Soil quality standards are guidelines that help ensure the safety and health of soil for agriculture, ecosystems, and human health by limiting harmful substances.

Front

What is the role of a raccoon in a temperate forest ecosystem?

Back

Raccoons are omnivores and scavengers, playing a role in controlling insect populations and recycling nutrients through their feeding habits.

Front

How can personal watercraft usage impact aquatic environments?

Back

Personal watercraft can increase water traffic, potentially leading to habitat disruption, pollution, and stress on aquatic life.