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

Author Question: Average atmospheric CO2 concentrations have ____ over the past 100 years. A) slightly decreased B) ... (Read 42 times)

tfester

  • Hero Member
  • *****
  • Posts: 534
on: Jul 13, 2018
Average atmospheric CO2 concentrations have ____ over the past 100 years.
 A) slightly decreased
  B) remained constant
  C) significantly decreased
  D) increased

Question 2

Carbon dioxide is removed from the atmosphere through the process of ____.
 A) fuel combustion
  B) respiration
  C) volcanic activity
  D) photosynthesis


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

memslove

  • Sr. Member
  • ****
  • Posts: 321
Reply #1 on: Jul 13, 2018
Answer to Question 1

D

Answer to Question 2

D


tfester

  • Member
  • Posts: 534
Reply 2 on: Jul 13, 2018
Great answer, keep it coming :)

T4T

  • Member
  • Posts: 348
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants. Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants.
Although average brain size increases gradually though time in H. erectus, individuals with small br Although average brain size increases gradually though time in H. erectus, individuals with small br
A levallois core from Kapedo Tuffs, Kenya dates about 130,000 years ago. A levallois core from Kapedo Tuffs, Kenya dates about 130,000 years ago.
In 2008, the U.S. economy suffered a gaping wound as several trillion dollars were ripped out of it. In 2008, the U.S. economy suffered a gaping wound as several trillion dollars were ripped out of it.
Effect of Atmospheric Stability Effect of Atmospheric Stability
Atmospheric currents carried radioactive fallout across much of Northern Hemisphere Atmospheric currents carried radioactive fallout across much of Northern Hemisphere
Video: Interpreting a cladogram Animation

For a complete list of videos, visit our video library