1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
scoundrel [369]
3 years ago
9

Chlorine in the stratosphere is believed to come primarily from cfcs rather than from natural sources such as volcanoes because:

Biology
2 answers:
Nataliya [291]3 years ago
6 0
Chlorine in the stratosphere is believed to come primarily from CFCs rather than from natural sources such as volcanoes because the rise in the concentration of chlorine present in the stratosphere coincides with the rise in the concentration of CFCs in the same period of time. Also, there are studies which measured samples of air from volcanoes which shows that the volcanoes have a very small contribution in the amount of chlorine found in the stratosphere. <span />
Andreyy893 years ago
5 0

 he answer is because <span>samples of air taken over erupting volcanoes shows that volcanoes contribute a small amount of chlorine in the stratosphere compared to CFCs. Volcanic eruptions account for a large instability of chlorine from land to the atmosphere on a yearly basis. This is in addition to chlorine that enters the atmosphere from sea spray, industrial processes and biological gases which are from CFCs. All of these inputs happen near or at the base of the atmosphere. Very little of the material emitted from volcanoes makes it up into the upper reaches of our atmosphere which is the stratosphere where it could touch the ozone layer. However, most of it is believed to be deposited lower down which is in the troposphere, where it then rained out back to the surface of the earth.</span>

You might be interested in
What serves as the molecular basis of life
SVEN [57.7K]
DNA serious as the Molecular
Basics for life DNA copies itself VIA the process of replication,
6 0
3 years ago
The fins of fishes and flipper of whale are:
VMariaS [17]

Homologous

The fins of fishes and flipper of a whale are homologous structures since they have different structure but similar structure

4 0
3 years ago
Read 2 more answers
The ability of the human body to break down the red color in beets is controlled by an autosomal dominant allele. The inability
Zinaida [17]

Answer:

Explanation:

<em>Let the ability to break down the red color in beets be represented by the allele </em><em>B</em><em>. The inability would be represented by the allele </em><em>b</em><em>.</em>

A nonsecretor's genotype would be BB or Bb while a secretor's genotype would be bb.

A nonsecretor woman with a secretor father would be a carrier with genotype Bb. A nonsecretor man who in a previous marriage had a secretor daughter would also be a carrier with genotype Bb. If the two marries:

            <em>Bb     x     Bb</em>

<em>            BB    2Bb    bb</em>

1.

(a) probability of their first child will be a secretor girl = probability of having a girl and being a secretor.

Probability of having a girl = 1/2

Probability of being a secretor = 1/4

<em>probability of their first child will be a secretor girl</em> = 1/2 x 1/4 = 1/8

(b) Probability of their first child being a nonsecretor girl = probability of having a girl and being a nonsecretor.

Probability of having a girl = 1/2

Probability of being a nonsecretor = 3/4

<em>Probability of their first child being a nonsecretor girl = probability of having a girl and being a nonsecretor</em> = 1/2 x 3/4 = 3/8

2. <em>Probability that their first two children will be nonsecretors of either sex = probability of their first being a nonsecretor and of either sex and probability of their second being a nonsecretor and of either sex.</em>

  = 3/4 x 3/4 = 9/16

6 0
3 years ago
3. Explain how a mutation can occur.
lina2011 [118]

Answer:

Either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke.

6 0
3 years ago
Read 2 more answers
Heritability refers to the extent to which trait variations among individuals are attributable to their differing
LUCKY_DIMON [66]

Answer:

Phenotypes

Explanation:

Heritability refers to the extent to which trait variations among individuals are attributable to their differing observable and most often definitive or measurable physical features, often called phenotypes. Examples of this variation could be something like height or eye colour. Basically it has to be traits that depend on genetics that environmental factors

6 0
3 years ago
Other questions:
  • Which of the following best describes the total amount of carbon in the system made up of the Earth and its atmosphere?
    14·1 answer
  • A triple beam balance is shown below. Select the part of the triple beam balance that is held when carrying the balance from pla
    11·1 answer
  • your body is protected by multiple layers of skin cells what shape would you excpect a cell on the outer layer of a skin to have
    14·1 answer
  • What is asexual reproduction?
    15·2 answers
  • Which of the following types of receptors are located in the mouth?
    12·1 answer
  • Organic molecules that perform many functions for living things and are made up of amino acid monomers are called
    12·1 answer
  • n pea plants, wrinkled seeds (W) is the dominant trait, while smooth seeds (w) is the recessive trait. Consider the cross Ww X W
    11·2 answers
  • What was George H. W. Bush’s “new world order?
    12·1 answer
  • The small blood vessels that distribute blood throughout the entire body are
    7·1 answer
  • The molecule shown the figure is?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!