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Yuki888 [10]
2 years ago
6

Briefly discuss the major threats to California's soil resources.

Biology
2 answers:
Iteru [2.4K]2 years ago
3 0

<u>Answer:</u>

The threats of California soil resources are soils, urban development

<u>Explanation:</u>

Native soils, unmodified by  human activity, are becoming  rare and we are losing the valuable  power they provide.  Soils in the Delta continue to subside.

Urban development has expanded into vast acres of prime farmland in California,  diminishing our capacity to produce sustainable food and fiber.Increased fire frequency will increase soil erosion, resulting in depletion of nutrients from the soil and polluting the surface waters that receive the runoff.

stealth61 [152]2 years ago
3 0

There are many threats to the soil resources in California some of them are Hydraulic mining, Forest fires, and Solar plant installation.

<u>EXPLANATION: </u>

  • Soil resources are said to be degraded when there is a decline in soil productivity.
  • This decline in soil productivity can be due to many factors.
  • The balance between the soil and the environment is usually disturbed by humans.
  • The first threat is the hydraulic mining in California disturbed natural soils.
  • Agriculture in California only depends on irrigation and the changes in water budgets largely affect the soil there.
  • Forest fires and its activities that are carried out to suppress fire causes soil erosion.
  • Also, the construction of solar and wind power facilities is disturbing the soil in deserts.
  • Thus, gradually California is reaching a point where undisturbed soil is rarely found.
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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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Because the green bacteria produced oxygen during photosynthesis, the purple bacteria had a harder time surviving.

Explanation:

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