« previous next »

Author Question: Natural sources produce greater quantities of air pollutants than do sources attributable to humans. ... (Read 159 times)

storky111

  • Hero Member
  • *****
  • Posts: 561
on: Jul 14, 2018
Natural sources produce greater quantities of air pollutants than do sources attributable to humans.
 
  Indicate whether the statement is true or false

Question 2

Problems with air pollution occurred as far back in time as the Roman period (2000 years ago).
 
  Indicate whether the statement is true or false


johnpizzaz

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jul 14, 2018
Answer to Question 1

TRUE

Answer to Question 2

TRUE


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Greater sage grouse Greater sage grouse
How Oil and Natural Gas Form How Oil and Natural Gas Form
Selected Natural Products Selected Natural Products
Atmospheric Pollutants Atmospheric Pollutants
Natural Causes of Climate Change Natural Causes of Climate Change
Natural community in the antelope Valley Natural community in the antelope Valley
Video: The primary factors that affect circulation - MABP, CO and SVR

For a complete list of videos, visit our video library