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 95 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
:D TYSM

JaynaD87

  • Member
  • Posts: 368
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

HUMAN BRAIN HUMAN BRAIN
Sections of the Human Brain Sections of the Human Brain
Amino acids not found in proteins Amino acids not found in proteins
As a result of a hole in the graph, which of the following functions does not have an average ... As a result of a hole in the graph, which of the following functions does not have an average ...
Human evolution Human evolution
Synteny between human and mouse chromosomes Synteny between human and mouse chromosomes
Video: Oogenesis Animation

For a complete list of videos, visit our video library