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 59 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
Thanks for the timely response, appreciate it

daiying98

  • Member
  • Posts: 354
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

Alcohol acts as a diuretic. Eight ounces of water is needed to metabolize just 1 ounce of alcohol.

Organ systems of the body with major functions. Organ systems of the body with major functions.
Land Plant Reproductive Terms Land Plant Reproductive Terms
Living systems such as the human body consist of closely interrelated elements Living systems such as the human body consist of closely interrelated elements
Natural Hazards Natural Hazards
plant tissue systems plant tissue systems
Offset Method Plot of Land Offset Method Plot of Land
Video: Hormonal regulation of pregnancy - week 1

For a complete list of videos, visit our video library