The answer is Combustion. Hope I was a help.
The challenges that scientists who want to study particular genes face are as follows:
1. There are many genes on a typical chromosome - A chromosome<span> typically contains hundreds to thousands of </span><span>genes.
2. </span>A small fraction of each chromosome encodes genes - <span> Genes only make up a small percentage of the genome; the rest is composed of non-coding sequences.
3. </span>It is difficult to distinguish between genes and non-coding genetic information - discriminating between<span> coding and </span>noncoding<span> regions in a given nonannotated genomic sequence is quite difficult.</span>
Sweat glands are located in the dermis.
Answer:
Calcium
Explanation:
it helps to make the bones strong by maintaining the bone mass necessary for them to function well.
B
(without the control you won't know what a normal result would be without the independent variable).