Front

What are common allergens and how do they harm people?

Back

Common allergens include pollen, dust mites, and pet dander, which can cause allergic reactions by triggering the immune system.

Front

What is biomagnification?

Back

Biomagnification is the process by which chemicals increase in concentration as they move up the food chain.

Front

What are three ways pathogens can spread?

Back

Pathogens can spread through direct contact, indirect contact, waterborne transmission, foodborne transmission, and bloodborne transmission.

Front

Which of the following is NOT a way chemical hazards can enter the soil?

Back

Natural decomposition of organic matter is NOT a way chemical hazards can enter the soil.

Front

Why are persistent organic pollutants (POPs) often handled by international agreements?

Back

POPs are highly toxic and can travel long distances across borders.

Front

Define allergens.

Back

Allergens are substances that can cause an allergic reaction in individuals.

Front

What is the immune response to allergens?

Back

The immune response to allergens involves the immune system mistakenly identifying a harmless substance as a threat, leading to symptoms like sneezing, itching, or swelling.

Front

What is the significance of chemical hazards in the environment?

Back

Chemical hazards can contaminate soil and water, posing risks to human health and ecosystems.

Front

Explain the concept of leaching in relation to chemical hazards.

Back

Leaching is the process by which chemicals are washed out of the soil and into groundwater, often due to rainfall or irrigation.

Front

What role do international treaties play in managing POPs?

Back

International treaties aim to regulate and reduce the use and release of POPs to protect human health and the environment.