« previous next »

Author Question: Since the____________________of 1970, emissions of most pollutants have fallen off substantially, ... (Read 184 times)

haleyc112

  • Hero Member
  • *****
  • Posts: 600
on: Jul 13, 2018
Since the________________ ____of 1970, emissions of most pollutants have fallen off substantially, with lead showing the greatest reduction, primarily due to the elimination of leaded gasoline.
  Fill in the blank with correct word.

Question 2

In the 1970s,____________________were the most widely used propellants in spray cans, such as deodorants and hairsprays.
  Fill in the blank with correct word.


blakeserpa

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jul 13, 2018
Answer to Question 1

ANSWER: Clean Air Act

Answer to Question 2

ANSWER: chlorofluorocarbons (CFCs)
CFCs
chlorofluorocarbons


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

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?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Climate has cooled substantially during primate evolution. Climate has cooled substantially during primate evolution.
This label on a Toyota Camry hybrid shows the relative smog-producing emissions, but this does not ... This label on a Toyota Camry hybrid shows the relative smog-producing emissions, but this does not ...
Photo of a sign taken at an emissions test facility. Photo of a sign taken at an emissions test facility.
Projections of global temperature depend heavily on the level of future greenhouse gas emissions Projections of global temperature depend heavily on the level of future greenhouse gas emissions
Transport accounts for 14% of greenhouse gas emissions Transport accounts for 14% of greenhouse gas emissions
Buildings account for 15% of greenhouse gas emissions Buildings account for 15% of greenhouse gas emissions
Video: Introduction to Cystic Fibrosis

For a complete list of videos, visit our video library