The purpose of RNA is to transfer amino acids to ribosomes for incorporation into a polypeptide undergoing synthesis.
Answer:
Although the question is incomplete, missing options are
- In 1997, they reduced their water consumption.
- In 1996, they planted more trees to curb water pollution.
- In 1994, they used only bottled water for drinking purpose.
- In 1995, they complained about foul odor and taste in water.
Correct option: <em><u>In 1996, they planted more trees to curb water pollution.
</u></em>
Explanation:
Among given options, a clear trend of nitrate level can be seen. <u>Initially, the nitrate level increased in water in first two years (1994 and 1995) and then it decreased significantly</u>.
From the conditions given in the question, the most probable answer is B the plantation effect (<u>phytoremediation</u>). During phytoremediation, <u>plants take up nutrients including nitrate</u> from the water via roots. This nitrogen is then used for the growth and development of plant body mass (e.g. amino acids). As more plants were growing in later years, higher reduction of nitrate was seen. Resultantly, in 1997, the concentration of nitrate was dropped to 7.3 mg/L.
The other options are not correct due to following reasons.
A. There is no information on water consumption in the question
C. There is no information on people's behavior on drinking water lifestyle.
D. Nitrate in the water cannot be smelled or tasted.
I think it something that do with transparent
<span>A
trophic level pertains to the position of an organism in the food chain. Humans
are the mos dominant organism that belong
to more than one trophic level. When we eat plants we become the primary consumers
but when we eat meat we can become the secondary or the tertiary consumers.
Birds are also organisms that belong to more than one trophic level. When birds
eat seeds they become the primary consumer, but when they eat insects they
become the secondary or even the tertiary consumers. </span>
<span>Basically, retrotransposons is transcribed
then reverse transcriptase produces a double-stranded DNA copy of the element
which is then inserted into the genome. In addition retrotransposons cont are
related to retroviruses that all carry pol and some contain gag. It is a none
encode env thus they can be reverse transcribed and inserted into host DNA but
are unable to produce viral particles. However a typical DNA transposon
transposed through consevative or replicative transposition. Thus these DNA
transposons are a group of transposable elements that can move in the DNA of an
organism via a single or double-stranded DNA intermediate. They have been found
in both prokaryotic and eukaryotic organisms. </span>
