Author Question: The atmospheric content of ________ has been increasing for the last century. What will be an ... (Read 49 times)

DelorasTo

  • Hero Member
  • *****
  • Posts: 548
The atmospheric content of ________ has been increasing for the last century.
 
  What will be an ideal response?

Question 2

________ is (are) responsible for placing oxygen in the atmosphere.
 
  What will be an ideal response?


mcinincha279

  • Sr. Member
  • ****
  • Posts: 316
Answer to Question 1

Answer: carbon dioxide

Answer to Question 2

Answer: Photosynthetic plants



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

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 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

For a complete list of videos, visit our video library