The correct option is A.
Environmental DNA surveillance is used for detection and monitoring of invasive animal species in aquatic and terrestrial ecosystem. The surveillance method provides information for the management personnel about the existence of alien species or outbreak of diseases. Early detection is always crucial in this case in order to prevent fatal consequences.<span />
        
                    
             
        
        
        
Petrified wood is a rock that i have seen 
        
             
        
        
        
On the off chance that I was a safeguard lawyer contending in court for shielding a coral reef from hurtful human exercises I would give particular contentions in the guard of this environment in the matter of why it must be ensured. I would first delineate that despite the fact that the coral reefs possess just 0.2% of the sea floor they give such imperative biological administrations. They go about as a characteristic boundary and ensure around 15% of the world's coastlines that would be harmed and devastated by disintegration from waves and tempests. They additionally give living spaces to about a fourth of the majority of the marine living beings. Next, I would depict how financially imperative coral reefs are. Coral reefs make up about a tenth of the world's worldwide fish catch and one-fourth of fish found inside creating nations.
        
             
        
        
        
Answer:
Magnetite is black or brownish-black with a metallic luster, has a Mohs hardness of 5–6 and leaves a black streak.
 
        
             
        
        
        
Answer:
A - DNA
B - mRNA
C - nuclear pore
D - tRNA
E - ribosome
F - rRNA
Explanation:
<em>The entire structure illustrates the process of transcription and translation in a typical eukaryotic cell.</em>
The DNA (A) in the nucleus of the cell is first transcribed to mRNA (B). The mRNA produced is transported to the cytoplasm through the openings within the nuclear membrane - the nuclear pores (C). On getting to the cytoplasm, the mRNA binds to the ribosome (E) (carrying rRNA, F). The tRNA (D) carrying the specific anticodon for a particular codon on the mRNA then binds to the structure and the corresponding amino acid is released. A polypeptide bond is formed between subsequent amino acids and the ribosome moves along the mRNA chain until the translation process is complete.