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

Author Question: The most productive systems on land are A) natural prairies. B) grasslands. C) forests. D) ... (Read 9 times)

jace

  • Hero Member
  • *****
  • Posts: 541
on: Jul 16, 2018
The most productive systems on land are
 
  A) natural prairies.
  B) grasslands.
  C) forests.
  D) tundra.

Question 2

In 1948 in Donora, Pennsylvania, the routine release of toxins into the air became a deadly fog because of
 
  A) a chemical spill in the nearby Monongahela River.
  B) greatly increased activity of the nearby industries.
  C) a thermal inversion and stagnant weather conditions.
  D) the failure of the chemical scrubbing systems on smokestacks.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

macagn

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

C

Answer to Question 2

C


jace

  • Member
  • Posts: 541
Reply 2 on: Jul 16, 2018
:D TYSM

ultraflyy23

  • Member
  • Posts: 312
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

Approximately 25% of all reported medication errors result from some kind of name confusion.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Organ systems of the body with major functions. Organ systems of the body with major functions.
Selected Natural Products Selected Natural Products
Land and sea breezes Land and sea breezes
Environmental Systems in Space and Time Environmental Systems in Space and Time
A Caecilian amphibian (Dermophis mexicana). Damp forests of Mexico. A Caecilian amphibian (Dermophis mexicana). Damp forests of Mexico.
Plot of Land (Modified Offset Method) - Offset lines Plot of Land (Modified Offset Method) - Offset lines
Video: Cavernous Sinus Larynx Middle Ear Orbit: Granulesm Animation

For a complete list of videos, visit our video library