Answer:
mRNA
Explanation:
why because the process begins of transcription is
RNA polymerase
Answer:
Leukocytes are a hindrance in a blood transfusion. They can be filtered out and improve a blood transfusion.
Explanation:
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Limestone is composed largely of the minerals calcite or aragonite. Some limestones do not consist of grains and are formed by the chemical precipitation of calcite or aragonite. This is how limestone can be classified as chemical.