This ensures that the experimenter can be certain that the variable they are testing is what causes a pattern in the data if there is a pattern.
Answer:
1. Evaporation
2. Condensation
3. Precipitation
4. Collection
Explanation:
I hope this helps, so sorry if it doesn't!! I haven't done this a while.
Answer:
We know that the sample is 35% adenine, which tells us that it is also 35% thymine. We know that cytosine and guanine pair together and will be present in equal amounts, so we can divide this final total by 2 to find our answer. The sample is 35% adenine, 35% thymine, 15% guanine, and 15% cytosine.
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This is common for boys in puberty. It is called gynecomastia
At the DNA level, there are two main types of point mutational changes: base substitutions and base additions or deletions. Base substitutions are those mutations in which one base pair substitutes for another. They, again, can be divided into two subcategories: transitions and transversions.