The fluctuations in abiotic cycles can influence the population in many ways. The population of a particular area depends on the various abiotic cycles such as nitrogen cycle, carbon cycle, phosphorous cycle. The changes in these cycles affects the life of population. Fluctuation results in hibernation of species. Some of the organisms migrate to another place in search of normal environment. The early breeding results in creating problems. It disturbs the ecological balance by using the limited supply of resources. The fluctuation in phosphorous cycle can affect the aquatic population. As the dependency of population on abiotic cycles is as important as the biotic factors the fluctuations can cause many problem.
the effect of natural disasters on the environment
b.
the effectiveness of current environmental law
c.
the effect of species loss on the environment
d.
the effect of dioxin on organisms in the environment
The effect of species loss on the environment is researched by an ecologist in an ecosystem. Thus option C is correct.
An ecosystem is defined as the structural and functional unit of where the living organisms interact with each other and their surrounding and was coined by A.G.Tansley, an English botanist, in 1935.
The basic components of an ecosystem are Biotic Components and Abiotic Components, both the components are interrelated with each other by doing energy flow.
Biotic components belongs to all living components like autotrophs, heterotrophs and saprotrophs. Autotrophs or producers like plants.
Second is consumer or heterotrophs which depend on other organisms for their food, can be primary consumers, secondary consumers and tertiary consumers.
Primary consumers are herbivores, Secondary consumers can be either carnivores or omnivores. Tertiary consumers get energy from on secondary consumers.
Quaternary consumers are carnivores and Decomposers include saprophytes feed on dead and decaying matter.
Thus option C is correct.
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b. Systems tend to become less randomized over time, which causes spontaneous processes to no longer occur.
c. Energy is destroyed in each stage, causing the amount of available energy to decrease with each stage.
d. Energy is lost as heat in each stage, causing the amount of energy available to decrease with each stage.
Answer:
its D
Explanation:
Answer:
Thymine= 60 ng
Guanine= 20 ng
The complementary base pairing occurs between adenine and thymine and guanine and cytosine bases.
Explanation:
According to the Chargaff rule, a double-helical DNA molecule has an equal number or equal amount of adenine and thymine bases since adenine always pairs with thymine. Similarly, the amount of guanine base is equal to that of the cytosine base.
Chargaff rule is based on the complementary base pairing between purine and pyrimidine bases. According to the given information, the amount of adenine is 60 ng. Therefore, the cell would have 60 ng thymine. Similarly, the amount of the cytosine base in the cell is 20 ng which means that the cell would have 20 ng of guanine base.
According to Chargaff's rules, the amount of adenine is equal to the amount of thymine, and the amount of cytosine is equal to the amount of guanine in a DNA molecule. Thus, the cell should have 60 ng of thymine and 20 ng of guanine.
The question refers to the base pairing rules in DNA, which were discovered by Erwin Chargaff and are now known as Chargaff's rules. According to these rules, the amount of adenine (A) in DNA is always equal to the amount of thymine (T), and the amount of cytosine (C) is always equal to the amount of guanine (G).
In this case, if the DNA analysis reveals that the cell has 60 ng of adenine, the cell should also contain 60 ng of thymine according to Chargaff's rules, since A = T. Similarly, if the cell contains 20 ng of cytosine, there should be 20 ng of guanine as well, because C = G.
So, based on the base pairing rules in DNA, the cell should have 60 ng of thymine and 20 ng of guanine.
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Answer:
A. C3!
Explanation: