The answer is letter C. Radon
One of the natural pollutants in ground water system is radon gas. Radon gasses are from the Uranium decay from the Earth’s crust and possibly enter the groundwater system. There is a big possibility that the water that enters our home from the groundwater system can be polluted.
Radon is a source of natural groundwater pollution (option B)
Radon is a naturally occurring radioactive gas that is colorless, odorless, and tasteless. It is formed from the decay of uranium, which is found in all rocks and soils. Radon can seep into homes and buildings through cracks and other openings in the foundation. It can also be found in groundwater.
Radon is a health hazard because it can cause lung cancer. When you breathe in radon, the radioactive particles can get trapped in your lungs. Over time, these particles can damage DNA and lead to cancer.
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An example of "DNA overload" occurs when the replication system has trouble keeping up with the demand for DNA replication. This can occur when there is a high rate of replication initiation, which induces the rapid development of multiple replication forks.
For efficient and timely replication, the replication process requires coordination among many proteins and enzymes in its many complex steps. When too many replication forks form rapidly and overwhelm the replication machinery, replication mistakes, fork stalling and perhaps DNA damage can occur.
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Diploid = 2n
Haplod = n
64=2n
n=32
32 haploid chromosomes
b. ciliates.
c. dinoflagellates.
d. euglenoids.
Hello!
your answer will be
A
have a goed day
B. In many houses the Prussian officer ate at the same table with the family.
C. By the exercise of tact the number of men quartered in one's house might be reduced; and why should one provoke the hostility of a person on whom one's whole welfare depended?
D. And foolhardiness is no longer a failing of the citizens of Rouen as it was in the days when their city earned renown by its heroic defenses.
E. Out of doors, therefore, citizen and soldier did not know each other; but in the house both chatted freely, and each evening the German remained a little longer warming himself at the hospitable hearth.
B. In many houses the Prussian officer ate at the same table with the family.
E. Out of doors, therefore, citizen and soldier did not know each other; but in the house both chatted freely, and each evening the German remained a little longer warming himself at the hospitable hearth.
The above two lines from "Guy de Maupassant's short story "Boule de Suif" shows that the relation between the French and German people remained friendly despite the war.
Yes, several organisms like certain deep-sea creatures and fungi can survive without energy from the sun. They derive their energy from chemical reactions or by absorbing nutrients from surroundings.
Yes, there are several organisms that can survive without relying on the energy from the sun. These organisms are often found in extreme environments where sunlight is minimal or absent such as deep ocean trenches. These organisms derive their energy from sources other than sunlight - most commonly via chemosynthesis. For instance, deep-sea hydrothermal vent ecosystems harbor a variety of organisms that survive without sunlight. Instead, they rely on chemicals present in the vent fluids as their energy source.
Another example is fungi, which absorbs nutrients from other organisms and doesn't depend on the sun for energy. Also, there are certain types of bacteria like the ones found in our gut that can survive without energy from the sun.
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An enzyme remains unchanged after it catalyzes a chemical reaction.
An enzyme is a biological catalyst that regulates the rate of biochemical reactions in living systems.
Enzymes aid in the occurrence of certain reactions in the body. That is, some chemical reactions cannot occur without specific enzymes.
Enzymes act by binding their active site to the substrate. However, they remain unchanged after the reaction i.e. can be reused.
Therefore, an enzyme remains unchanged after it catalyzes a chemicalreaction.
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