« 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 49 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?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Photosynthetically active radiation (PAR) diminishes substantially with passage through the canopy o Photosynthetically active radiation (PAR) diminishes substantially with passage through the canopy o
Types of active transport into and out of cells. Types of active transport into and out of cells.
How temperature differences generate wind How temperature differences generate wind
Harvard Alumni Study show who are more physically active in middle adulthood Harvard Alumni Study show who are more physically active in middle adulthood
Teens who date in early adoles-cence are more likely to become sexually active Teens who date in early adoles-cence are more likely to become sexually active
The sandworm (Nersis) is an active predator that burrows in marine mudflats The sandworm (Nersis) is an active predator that burrows in marine mudflats
Video: Major Elements in Biological Molecules: Nucleic acids

For a complete list of videos, visit our video library