« previous next »

Author Question: Certain pollutants that enter the atmosphere directly, such as from smokestacks and tail pipes, are ... (Read 109 times)

lak

  • Hero Member
  • *****
  • Posts: 546
on: Jul 13, 2018
Certain pollutants that enter the atmosphere directly, such as from smokestacks and tail pipes, are called ____.
   a. criteria pollutants
   b. noxious pollutants
   c. primary air pollutants
   d. secondary air pollutants
   e. reactive pollutants

Question 2

The original Clean Air Act in the United States was enacted in ____.
   a. 1946
   b. 1955
   c. 1970
   d. 1977
   e. 1990


Mochi

  • Sr. Member
  • ****
  • Posts: 300
Reply #1 on: Jul 13, 2018
Answer to Question 1

ANSWER: c

Answer to Question 2

ANSWER: c


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Desert cottontail as seen from behind such that the white tail is easily visible Desert cottontail as seen from behind such that the white tail is easily visible
Pupil Assessment, Move Penlight directly in Front of Pupil Pupil Assessment, Move Penlight directly in Front of Pupil
Tubal ligation. To minimize the size of the incisions necessary, laparoscopic surgery may be used to Tubal ligation. To minimize the size of the incisions necessary, laparoscopic surgery may be used to
Iron in the Sun’s Atmosphere Iron in the Sun’s Atmosphere
Traction neck with head in neutral position. With recipient’s face directly up, hold head at ... Traction neck with head in neutral position. With recipient’s face directly up, hold head at ...
Video: Electrical Conduction System of the Heart

For a complete list of videos, visit our video library