Author Question: The threshold level for harmful effects of toxic pollutants is most closely related to the A) ... (Read 55 times)

NClaborn

  • Hero Member
  • *****
  • Posts: 560
The threshold level for harmful effects of toxic pollutants is most closely related to the
 
  A) first appearance of chronic effects.
  B) time of day of exposure.
  C) concentration of exposure.
  D) concentration and duration of exposure.

Question 2

Regions where humans produce high levels of aerosols and dust will most likely experience
 
  A) less rainfall, reduced solar radiation to the Earth's surface, and cooler temperatures.
  B) less rainfall, increased solar radiation to the Earth's surface, and higher temperatures.
  C) more rainfall, increased soil nutrients, and reduced solar radiation to the Earth's surface.
  D) more rainfall, decreased soil nutrients, and increased solar radiation to the Earth's surface.



TINA

  • Sr. Member
  • ****
  • Posts: 336
Answer to Question 1

D

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

For a complete list of videos, visit our video library