« previous next »

Author Question: Which of the following are entirely, or partly, composed of calcium carbonate? A (Read 1450 times)

Charlie

  • Hero Member
  • *****
  • Posts: 640
on: Aug 5, 2013
Which of the following are entirely, or partly, composed of calcium carbonate?
A) spicules of siliceous sponges
B) coral animals' exoskeletons
C) molluscs' mantles
D) insects' cuticles
E) nematodes' cuticles


camila

  • Hero Member
  • *****
  • Posts: 705
Reply #1 on: Aug 8, 2013
Answer has to be B, trust me!


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Charlie

  • Hero Member
  • *****
  • Posts: 640
Reply #2 on: Oct 18, 2013
Wonderful, you were right, thank you so much.


Laurenleakan

  • Sr. Member
  • ****
  • Posts: 309
Reply #3 on: Feb 18, 2015
Thank you!


« previous next »
 

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

A biofilm composed of a community of microorganisms glued by mucilage to a surface. A biofilm composed of a community of microorganisms glued by mucilage to a surface.
he vertebrate stomach as an example of an organ composed of all four tissue types he vertebrate stomach as an example of an organ composed of all four tissue types
The Chemical Structure of DNA DNA is composed of nucleotide pairs. The Chemical Structure of DNA DNA is composed of nucleotide pairs.
The regulation of muscle contraction by calcium The regulation of muscle contraction by calcium
Table Salt Is Composed of Sodium and Chloride Table Salt Is Composed of Sodium and Chloride
Which outcome corresponds to the combination of silver and carbonate ions shown in the ... Which outcome corresponds to the combination of silver and carbonate ions shown in the ...
Video: Corpus Callosum Animation

For a complete list of videos, visit our video library