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Vedmedyk [2.9K]
3 years ago
9

What are CFCs and why are they bad?

Biology
2 answers:
Marrrta [24]3 years ago
6 0
Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine. They are used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants.<span>Man-made compounds such as chlorofluorocarbons (CFCs), hydrofluorocarbons (HCFCs) and halons destroy ozone in the upper atmosphere (stratosphere). The stratospheric ozone layer makes life possible by shielding the earth from harmful ultraviolet (UV-B) rays generated from the sun. Decreased concentration of stratospheric ozone allows increased amounts of UV-B to reach the earth's surface.</span>
sp2606 [1]3 years ago
3 0
Hey there!

CFCs are fake chemicals and can be very dangerous. They are bad because they cause "ozone depletion" and can later cause cancer.

Hope this helps.
Have a great day (:
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A cross between two individuals that are heterozygous for eye and skin color would be an example of a _____ cross.
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A cross between individuals that are heter0zyg0us for two different traits is a dihybrid cross. <em>A cross between two individuals that are heterozygous for eye and skin color would be an example of a _</em>dihybrid<em>_ cross.</em>

----------------------

Dihybrid crosses involve individuals that expresses two different traits and are heter0zyg0us for each of them.

So let us imagine we are studing the characters eye color and skin color. Let us assume that both of them are coded by single diallelic genes.

For eye color there is

  • Dominant allele B that codes for brown eyes
  • Recessive allele b that codes for blue eyes

For skin color there is

  • Dominant allele A that codes for black skin
  • Recessive allele a that codes for white skin

So, an individual that is heter0zyg0us for both of them, is BbAa.

If this person crosses to another person with the same genotype, we are talking about a <u>dihybrid cross</u>, because two dibybrid individuals are involved.

                             Cross:    BbAa      x      BbAa

According to this information, we can aswer the question:

<em>When crossing two individuals that are heterozygous for eye and skin color we are referring to a</em><em> dihybrid cross.</em>

-----------------------------------

Learn more about dihybrid crosses at

brainly.com/question/1185199?referrer=searchResults

brainly.com/question/24076691?referrer=searchResults

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Explanation:

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The long term effect is that the increased primary productivity of everything it consumes around its food web
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53 The plants in an ecosystem produce food
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The plants in an ecosystem produce food  for most of the other organisras that live in  that ecosystem. The role of a plant in its  ecosystem is its <em>trophic level</em>

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