Poultry products are a likely source of infection by Salmonella enterica
which causes typhoid.
Most farm animals such as pigs, cattle and poultry have been found to be
infected with Salmonella enterica as a result of their contact and exposure
to a dirty environment.
This is why it is advisable to apply much heat on poultry products such as
eggs to kill the micro-organism.
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The right answers are : b. nitrogenous bases c. phosphates d. sugars.
Deoxyribonucleic acid (DNA) is the genetic information of most living organisms (on the other hand, some viruses, retroviruses, use ribonucleic acid (RNA) as genetic information).
- DNA is a polymer, made of units called nucleotides (or mononucleotides).
- The nucleotide consists of a phosphate + a sugar + a nitrogenous base. In DNA, the nucleotide is a deoxyribonucleotide (in RNA, the nucleotide is a ribonucleotide).
The largest ecosystem on the planet is the ocean system. The correct option in regards to the given question is option "C". It is a known fact that our earth is covered with 70% water and 30% land. On top of that the marine environment covers about 97%. This is the largest ecosystem on our planet.
<span>It is a known fact that our
earth is covered with 70% water and 30% land. On top of that the marine
environment covers about 97%. This is the largest ecosystem on our planet.
The marine world supports a huge amount of life form and there is also the
opinion that the first life could have evolved from this system. </span>
