This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: With the Air Pollution Control Act and the Clean Air Act's subsequent amendments over the past few ... (Read 25 times)

jayhills49

  • Hero Member
  • *****
  • Posts: 559
on: Jul 16, 2018
With the Air Pollution Control Act and the Clean Air Act's subsequent amendments over the past few decades, air quality in the U.S. with regard to criteria pollutants has
 
  A) worsened, with all pollutants significantly increasing.
  B) remained about the same for all pollutants.
  C) significantly improved for all pollutants except lead, which has worsened.
  D) greatly improved for all pollutants.

Question 2

About 30,000 years ago, humans survived most like which of the following organisms?
 
  A) Roaming groups of omnivorous chimps
  B) Herds of herbivorous bison and elk
  C) Flocks of herbivorous geese migrating broadly across continents
  D) Isolated carnivorous cougars hunting for their own meals


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Kaytorgator

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jul 16, 2018
Answer to Question 1

D

Answer to Question 2

A


jayhills49

  • Member
  • Posts: 559
Reply 2 on: Jul 16, 2018
YES! Correct, THANKS for helping me on my review

Bigfoot1984

  • Member
  • Posts: 321
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

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?

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?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Heat Exchanger Block Diagram Feedforward Control Heat Exchanger Block Diagram Feedforward Control
With a three-way catalytic converter, emission control is most efficient with an air–fuel ratio ... With a three-way catalytic converter, emission control is most efficient with an air–fuel ratio ...
Many fuel-control oxygen sensors are located in the exhaust manifold near its outlet so that the ... Many fuel-control oxygen sensors are located in the exhaust manifold near its outlet so that the ...
The Threat of Air Pollution The Threat of Air Pollution
Control of glycogen phosphorylase activity Control of glycogen phosphorylase activity
Typical pattern of the stages of labour for first births and subsequent births Typical pattern of the stages of labour for first births and subsequent births
Video: Chemical Synapse Animation

For a complete list of videos, visit our video library