« previous next »

Author Question: What is the quaternary period? A) the period when Earth began. B) the last geologic era. C) ... (Read 29 times)

SGallaher96

  • Hero Member
  • *****
  • Posts: 509
on: Jul 16, 2018
What is the quaternary period?
 
  A) the period when Earth began.
  B) the last geologic era.
  C) the first geologic era.
  D) the present geologic era.

Question 2

Which of the following is not a way to add carbon dioxide to the atmosphere?
 
  A) burning fossil fuels.
  B) cooling of the oceans.
  C) warming of the oceans.
  D) land clearing for agriculture.


abctaiwan

  • Sr. Member
  • ****
  • Posts: 355
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Landmarks in the evolution of life on Earth Landmarks in the evolution of life on Earth
Quaternary structure of deoxyhemoglobin. (PDB ID 2HHB) Quaternary structure of deoxyhemoglobin. (PDB ID 2HHB)
Size comparison of Earth and Uranus Size comparison of Earth and Uranus
Tides on Earth Tides on Earth
Earth’s Revolution and Rotation Earth’s Revolution and Rotation
Gravitational Potential Energy for the Earth problem Gravitational Potential Energy for the Earth problem
Video: Energy Flow - Trophic Levels and Food

For a complete list of videos, visit our video library