A presumptive Test presumes the pet presence of the question substance it is useful because it tells the drug is used false positive is possible meaning that the test result is positive but the substance is not present.
30% because adenine always pairs with guanine.
Plastic is taken from the natural, organic substances called Cellulose, Coal, Natural Gas, salt and Crude oil.
Unicellular organisms excrete waste by a contractile vacuole. A vacuole is membrane-enveloped organelle in a cell that is found in lots of microorganism. It expands, filling with water then contracts, removing all of its contents to the exterior of the cell.
Answer:
The answer is D. Double Helix
