B - Many Agricultural practices bear some pretty bad impacts on the environment. A, C and D are incorrect.
Answer:
Tigers and goldfish are not related. They are to far apart on the phylogenetic tree, or evolutionary tree.
Explanation:
Ones a Mammal and ones a Fish, they aren't going to be related.
Answer:
Louis Pasteur was a French chemist and microbiologist renowned for his discoveries of the principles of vaccination, microbial fermentation, and pasteurization.
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Answer:
D
Explanation:
An enzyme called poly (A) polymerase (PAP) is part of the same protein complex that cleaves the pre-mRNA and it immediately adds a string of A nucleotides, called the poly (A) tail, to the 3′ end of the just-cleaved pre-mRNA. The poly (A) tail added protects the mRNA from degradation, aids in the exportation of the mature mRNA to the cytoplasm and helps in binding proteins involved in initiating translation.
Necleuic acids. Remember, this has to do with the brain.