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

Author Question: What percentage of hydrocarbons found in the atmosphere result from human activity? A) 15 B) 35 ... (Read 90 times)

erika

  • Hero Member
  • *****
  • Posts: 522
on: Aug 27, 2018
What percentage of hydrocarbons found in the atmosphere result from human activity?
 
  A) 15
  B) 35
  C) 55
  D) 75

Question 2

Most hydrocarbons in the atmosphere in rural areas arise from
 
  A) automobile exhaust.
  B) evaporation of gasoline.
  C) industrial emissions.
  D) natural sources.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jonathanballen97

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Aug 27, 2018
Answer to Question 1

A

Answer to Question 2

D


erika

  • Member
  • Posts: 522
Reply 2 on: Aug 27, 2018
Gracias!

amandalm

  • Member
  • Posts: 306
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

The Peary caribou is a relatively small and pale subspecies found in the tundra of far northern Nort The Peary caribou is a relatively small and pale subspecies found in the tundra of far northern Nort
Skeletons of a human and an elephant Skeletons of a human and an elephant
Relationship Between Physical Activity and Improved Health Benefits Relationship Between Physical Activity and Improved Health Benefits
Systems of the Human Body Systems of the Human Body
DNA-sequence alignment of contigs on human chromosome 2 DNA-sequence alignment of contigs on human chromosome 2
Main body cavities that hold human organs Main body cavities that hold human organs
Video: Types of energy transfer reactions: oxidation-reduction reactions and ATP generation reactions

For a complete list of videos, visit our video library