Answer:
mutual....becausen they get benefit from each others
methanogens, halophiles, and thermophiles. The methanogens are anaerobic bacteria that produce methane. They are found in sewage treatment plants, bogs, and the intestinal tracts of ruminants.
Answer:
Using coal as a source of energy can come with some environmental issues. And it involves other chemicals, which are sulfur dioxide and nitrogen oxide.
Sulfur dioxide contributes to acid rain and respiratory illnesses. Nitrogen oxide contributes to smog and respiratory illnesses. And particulates contribute to smog, haze, and respiratory illnesses and lung disease.
Answer:
Some physical characteristics, such as the color of the human skin or eyes, are controlled by at least two genes. These traits are known as polygenic traits. The number of genes that determine the color of the iris is unknown, but the most significant of them are found in Chromosome 15 and they are named OCA2 and HERC2. These genes are associated with the production of melanin.
Explanation: Polygenic inheritance describes the inheritance of traits that are determined by more than one gene. These genes, called polygenes, produce specific traits when they are expressed together. Polygenic inheritance differs from Mendelian inheritance patterns, where traits are determined by a single gene. Polygenic traits have many possible phenotypes (physical characteristics) that are determined by interactions among several alleles. Examples of polygenic inheritance in humans include traits such as skin color, eye color, hair color, body shape, height, and weight.
As far as I know, I think the correct answer is option 2.