« previous next »

Author Question: A sand dune is considered active when A) it is being moved by wind. B) it is being colonized by ... (Read 100 times)

KimWrice

  • Hero Member
  • *****
  • Posts: 579
on: Jul 16, 2018
A sand dune is considered active when
 
  A) it is being moved by wind.
  B) it is being colonized by new plants.
  C) it has been formed by volcanic activity.
  D) it is being dissolved into the sea.

Question 2

The largest typical size for grains of sand that can be commonly moved by wind is
 
  A) 5 micrometers.
  B) 0.5 millimeter.
  C) 1.0 millimeter.
  D) 1.0 centimeter.


Viet Thy

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: A

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?

The average adult has about 21 square feet of skin.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Martin Van Buren, sitting uncomfortably for this engraving, would eventually ascend to the presidenc Martin Van Buren, sitting uncomfortably for this engraving, would eventually ascend to the presidenc
Rackstraw Downes, Presidio in the Sand Hills Looking East with ATV Tracks and Water Tower. Rackstraw Downes, Presidio in the Sand Hills Looking East with ATV Tracks and Water Tower.
Mechanisms of Active and Passive Immunity Mechanisms of Active and Passive Immunity
Wind Power Wind Power
Active Transport in Vesicles: Receptor-mediated Endocytosis Active Transport in Vesicles: Receptor-mediated Endocytosis
Harvard Alumni Study show who are more physically active in middle adulthood Harvard Alumni Study show who are more physically active in middle adulthood
Video: Structure of a Ribosome

For a complete list of videos, visit our video library