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raketka [301]
3 years ago
13

When in U.S, history did pollution start to become an issue? Explain why pollution was not an issue prior to this time period.

Biology
1 answer:
sasho [114]3 years ago
8 0

Answer:

pollution began to be a problem in 1800's.

Explanation:

more people meant more rubbish. industry also added to this

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Fats are broken into saturated fats and unsaturated fats. Which of these explains the difference between saturated and unsaturat
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Im pretty sure the answer is B
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A gene for disease resistance in fir trees is transferred to pine trees using modern DNA technology. How might this be economica
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Describe briefly the interactions between abiotic and biotic components of an ecosystem
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2. Dominant trait: cleft chin (C) Mother’s gametes: Cc
kakasveta [241]

Answer No 2:

      c      c

C   Cc     Cc

c    cc      cc

The genotype of the offsprings would be Cc, Cc, cc, cc i.e heterozygous cleft chin and no cleft chin. The phenotype of the offsprings could be 50% cleft chin and 50% without cleft chin.

there will be 50% chance of the child to have cleft chin.

Answer No 3:

        A        a

A     Aa       Aa

a      Aa        aa

There will be 25% chance for the offspring to have arched feet. As arched feet is a recessive trait, so for this trait to occur both the alleles of the gene should be recessive i.e aa.

Answer No 4:

    B      b

b   Bb    bb

b    Bb    bb

As blonde is a recessive trait, so both the alleles for this gene should be recessive for this trait to occur. Hence, according to the punnet square, there will be 50% chance for the offspring to be blonde.

Answer No 5:

           F      f

F          FF    Ff

f           Ff     ff

As normal vision is a resessive trait, hence both the alleles of the gene should be recessive for the trait to occur. According to the punnet square, there is 25% chance that the child will have normal vision.

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3 years ago
What are two main processes must carbon go through?
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There are 3 main processes that carbon dioxide (co2) must go through :

Respiration -  All plants and animals are able to release energy from their food using respiration. This can also include any other living organism out there.

Combustion - This is the process of burning fuel. This releases carbon dioxide into the open space.

Photosynthesis- Any sort of g<span>reen plant, such as flowers, can remove carbon dioxide from the atmosphere by using photosynthesis. </span>
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