« previous next »

Author Question: Dark skin is advantageous in the tropics because it a. protects from frostbite. b. protects from ... (Read 268 times)

futuristic

  • Hero Member
  • *****
  • Posts: 638
on: Jul 10, 2018
Dark skin is advantageous in the tropics because it
 
  a. protects from frostbite.
  b. protects from overexposure to ultraviolet radiation.
  c. helps prevent rickets.
  d. promotes vitamin D synthesis.
  e. increases the skin's exposure to ultraviolet radiation.

Question 2

Ultraviolet radiation can be an important factor in selection for increased melanin production because UV radiation can cause
 
  a. rickets.
  b. albinism.
  c. skin cancer.
  d. the destruction of foliage.
  e. drought.


sokh

  • Sr. Member
  • ****
  • Posts: 357
Reply #1 on: Jul 10, 2018
Answer to Question 1

B

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

Did you know?

Medication errors are three times higher among children and infants than with adults.

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Measles. A photograph of a child stricken with measles, showing the tell-tale sign of the skin rash. Measles. A photograph of a child stricken with measles, showing the tell-tale sign of the skin rash.
Types of skin lesions. Types of skin lesions.
The Wet Tropics (Af, Am) The Wet Tropics (Af, Am)
Antigen (dark green and orange) and antibody (blue and green) binding forming a complex. Antigen (dark green and orange) and antibody (blue and green) binding forming a complex.
Using both hands, gently but firmly grasp the skin over a spot on the upper back, and lift the skin ... Using both hands, gently but firmly grasp the skin over a spot on the upper back, and lift the skin ...
Video: Major Elements in Biological Molecules: Nucleic acids

For a complete list of videos, visit our video library