« previous next »

Author Question: Although hair color and texture are genetically determined, the condition of your hair may also be ... (Read 63 times)

Beheh

  • Hero Member
  • *****
  • Posts: 520
on: Jul 15, 2018
Although hair color and texture are genetically determined, the condition of your hair may also be influenced by hormonal or environmental factors. As pigment production decreases with age the hair color lightens toward gray. White hair results from the presence of air bubbles within the hair shaft. Because the hair itself is quite dead and inert, changes in coloration are gradual. Unless bleach is used, it is not possible for hair to turn white overnight, as some horror stories would have us believe.
 
  a. The hair itself is dead and inert so any real change in the hair must be produced by using artificial chemicals.
  b. Although white hair is the result of air bubbles within the hair shaft, the hair can turn white overnight.
  c. Hair color and texture are genetically determined but other conditions of the hair are influenced by hormonal or environmental factors.
  d. Hair turns gray because the pigment production decreases with age.

Question 2

Inputs of solar energy drive atmospheric circulation, and thus climate. Changes in insolation could alter climate. Humans know little about variations in the amount of solar radiation reaching Earth, because it is difficult to observe the Sun through the filter of the atmosphere. Recent studies based on satellite observations of the Sun are beginning to suggest that variations in solar output could be responsible for some of the climatic variations observed in the last few hundred years and may have caused some of the warming of the twentieth century.
 
  a. Recent studies using satellite observations suggest that solar output could be responsible for some of the climate variations and possibly global warming.
  b. Global warming is directly caused by the variations of solar energy produced by the Sun.
  c. Since solar energy affects atmospheric circulation, it is possible that it controls the climate worldwide.
  d. Until recently humans have known very little about the Sun because of the dense atmosphere of the Earth.


moormoney

  • Sr. Member
  • ****
  • Posts: 326
Reply #1 on: Jul 15, 2018
Answer to Question 1

c

Answer to Question 2

a


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Deimos in color on February 21, 2009 by the same (not to scale) Deimos in color on February 21, 2009 by the same (not to scale)
Urine Color Guide Urine Color Guide
Trichromatic Theory of Color Vision Trichromatic Theory of Color Vision
The position of the fetus is first determined by ultrasound The position of the fetus is first determined by ultrasound
Genetically Modified Pig Genetically Modified Pig
A three-gene additive model for wheat kernel color A three-gene additive model for wheat kernel color
Video: Stimulus (introduction)

For a complete list of videos, visit our video library