Author Question: What natural element is vital to the body's ability to make vitamin D? a. iron b. sunshine c. ... (Read 108 times)

bobbysung

  • Hero Member
  • *****
  • Posts: 519
What natural element is vital to the body's ability to make vitamin D?
 
  a. iron
 b. sunshine
 c. chlorinated water
  d. selenium

Question 2

Today, food-foraging societies:
 
  a. are found only in the world's most marginal areas.
  b. make up the majority of the world's population.
  c. have not existed for 1,000 years.
  d. have their pick of the best environments.
  e. represent a primitive, undeveloped way of life.



stallen

  • Sr. Member
  • ****
  • Posts: 336
Answer to Question 1

b

Answer to Question 2

a



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

stallen

  • Sr. Member
  • ****
  • Posts: 336

 

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

For a complete list of videos, visit our video library