Author Question: The threshold level for harmful effects of toxic pollutants is most closely related to the A) ... (Read 82 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?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

For a complete list of videos, visit our video library