Answer: Option C.
Emissions from coal burning plants which then rain down on water ways.
Explanation:
Mercury has been found to be most serious and most common water contaminants. Mercury causes water pollution. It is released into the air and falls back in water ways. When it's get to water ways, bacteria changes it to methylmercury, if absorbed by aquatic organisms destroyed them. When consume by humans, it causes neurological disorder and kidney problem. The two major sources of Mercury contaminants in water ways are emissions from burning of coal plants and waste incinerators.
Answer: (D)
Explanation: biotic factors depend among abiotic factors, meaning that living things need non-living things in order to survive. That also means that biotic factors everywhere including the surrounding area need to be thought of in this sense so that they are able to survive in the environment they are in.
First we have to figure out whether the allele controlling for that trait is dominant or recessive. From female A, the pedigree indicates that she shows the trait, but neither of her parents shows the phenotype of the trait. Female A is only possible to have the trait showed if both of her parents carry an allele of the trait. So, that allele for controlling the trait should be recessive and their parents are heterozygous as neither of the parents shows it in their phenotype.
After we figured out the allele is recessive, we can easily determine the genotype of female A. Traits that are controlled by recessive alleles can only be shown in phenotypes if theres no dominant allele existing. Therefore, the genotype of female A must be both recessive, and that means she's homozygous (recessive).
Simple epithelial is the specialized tissue that allows for the rapid diffusion of gasses and nutrient across cells
