This topic contains a solution. Click here to go to the answer

Author Question: Which of the following statements regarding sea-level is false? A) Sea level is a convenient ... (Read 66 times)

dejastew

  • Hero Member
  • *****
  • Posts: 562
Which of the following statements regarding sea-level is false?
 
  A) Sea level is a convenient reference position because it is constant.
  B) The edges of continents submerged today were dry land at times in the past.
  C) Marine sedimentary rocks in present day continental interiors indicate times when continents were submerged.
  D) There is a connection between average lithosphere age and sea level.

Question 2

How do human activities affect soils?
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

parshano

  • Sr. Member
  • ****
  • Posts: 333
Answer to Question 1

Answer: A

Answer to Question 2

Answer: Plowing and cultivation disturb soil horizons. Agricultural activities may also reshape the land surface, which increases water runoff and decreases infiltration into the soil. Bare areas, rows of sown crops, and compacted land surfaces leave significant parts of the field exposed to water runoff and soil erosion. The loss of vegetation, especially during drought, promotes soil erosion by wind. Dry conditions and the lack of vegetation decrease soil moisture and enhance the ability of wind to pick up and move soil particles. Terracing steep slopes and planting parallel to contours diminishes water runoff. Planting continuous covers of vegetation and trees serves as a windbreak and helps retain soil moisture. Practicing no-till methods also decreases erosion by inhibiting water runoff and restores nutrients to the soil.




dejastew

  • Member
  • Posts: 562
Reply 2 on: Jul 16, 2018
Excellent


hollysheppard095

  • Member
  • Posts: 339
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

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?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

For a complete list of videos, visit our video library