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3 years ago

These are the components of the reservoirs of carbon that are exchanged in our environment. name these components

Biology

1 answer:

Marat540 [252]3 years ago

8 0

Answer:

Carbon is a non-metallic and solid chemical element that is found in certain inorganic compounds and in all organic compounds. There are several types of carbons, which are the following:

CRYSTALS

Diamond: by having a SP 3 hybridization, this carbon is the hardest element. It is characterized by having a tetrahedral structure. It is characterized by being a high quality electrical insulator and is also a semiconductor.

Graphite: this material is composed of numerous sheets that have hexagonally located carbon atoms. Thanks to its SP 2 hybridization it manages to conduct electricity.

AMORPHES

A. Natural: these carbons are impure and are the result of the petrification processes of decomposed organic materials.

Coal: this rock has different percentages of carbon ranging between 50% and 80% of its totality. It is characterized by its black being with greasy or matte sheen, it is brittle, extremely hard and consists of compressed lignite.

Peat: This material is characterized by its abundance of carbon, has a rather dark brown color and is composed of compact organic matter. Something that differentiates it from the other materials is that the peat can crumble.

Anthracite: this mineral is the one with the highest amount of carbon, which reaches 95% of its total composition. It has a characteristic brightness and hardness.

Lignite: this has a texture similar to wood, matter from which it comes. It is brown or black and is formed from compressed peat.

B. Artificial: these are stone carbons which depend on their composition and age.

Animal carbon: this material is the result of bones that undergo dry combustion or distillation.

Coke coal: this fuel is acquired from distilled coal that calcites are added to achieve better combustion. This process is carried out in closed furnaces where the fuel is subjected to extremely high temperatures.

Retort coal: this material, widely used in construction, is a good conductor of electricity and heat. It is characterized by its hardness and is found in retort walls of refractory material. In them, coal is distilled.

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Answer:

The correct answer is - biological hierarchy.

Explanation:

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The broadest or highest level of the organization is biosphere in biological hierarchy in includes all other living organisms with non living things present in it. atoms to cell, tissue, organ, organ system to organism. these organisms shows interaction with each other and called populations that form communities, to ecosystem and finally biosphere.

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3 years ago

Mendel accounted for the observation that traits that had disappeared in the f1 generation reappeared in the f2 generation by pr

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Answer:

Option C, traits can be dominant or recessive, and the recessive traits were obscured by the dominant ones in the F1.

Explanation:

Complete question-

Mendel accounted for the observation that traits which had disappeared in the F1 generation reappeared in the F2 generation by proposing that

Select one:

a. new mutations were frequently generated in the F2 progeny, "reinventing" traits that had been lost in the F1.

b. the mechanism controlling the appearance of traits was different between the F1 and the F2 plants.

c. traits can be dominant or recessive, and the recessive traits were obscured by the dominant ones in the F1.

d. the traits were lost in the F1 due to dominance of the parental traits.

e. members of the F1 generation had only one allele for each trait, but members of the F2 had two alleles for each trait.

Solution -

In the Mendel’s experiment, some traits which were absent in the F1 generation appeared in the second generation cross. By this he concluded, that the traits exressed in the F1 generation were dominant and hence they capped the expression of traits associated witl recessive allele. He classified the traits in F2 generation as recessive, because these traits can occur only when they are in pair i.e they form individuals with homozygous recessive genotype.

For instance – If “R” is allele for dominant red color trait and “r” is the allele for recessive white color trait, then the cross between true breeding red flowers and white flowers will produce following offspring

RR * rr

Rr, Rr, Rr, Rr

Thus, in F1 generation all the offspring are heterozygous red

F2 generation-

Rr * Rr

RR, Rr, Rr, rr

The recessive trait of white colored flower reappears in second generation.

Hence, option C is correct

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