60 years is three half life for the substance, so 40*1/2^3=5
These are the most important 6 biomes:
1. Freshwater
<span>2. Marine
</span>3. Desert
<span>4. Forest
5. Grassland
</span>6. Tundra<span>.</span>
<span>A major difference between the eccrine sweat glands and the appocrine sweat glands is that eccrine glands empty into/onto the skin surface while apocrine glands empty into/onto the hair follicle.
There are two types of sweat gland, eccrine and apocrine. As the eccrine glands empty into the skin surface, they are present all over the body particularly on forehead, palms and feet. That's why we feel more sweat on these parts of the body. while apocrine glands empty into/onto the hair follicles so they are mostly armpits.</span>
Answer:
The correct answer would be - D. the distribution of alleles in a population.
Explanation:
Allele frequency in population genetics is the term used to provide the amount of the different alleles in particular loci. In other words, it is the distribution of alleles in a population.
The term allele frequency refers to the fraction of the copies of the gene of the alleles in a known population. It can be calculated by the number of allele present of interest divided by total number of alleles in a population.