B. Soil Contamination
All the other answers are talking about clean and pure things while this answer is the only negative one. So B is your answer.
I believe your Answer would be:
A: Sister Chromatids.
Explanation:
A sister chromatid refers to the identical copies (chromatids) formed by the DNA replication of a chromosome, with both copies joined together by a common centromere. In other words, a sister chromatid may also be said to be 'one-half' of the duplicated chromosome.
Hope I helped, if so may I get brainliest and a thanks?
Thank you, Have a good day! =)
Answer:
natural selection is the answer
Answer:The kyoto protical is enforced because compliance mechanism is designed to strengthen the Protocol's environmental integrity, support the carbon market's credibility and ensure transparency of accounting by Parties
Explanation:
