Answer:
<em>The correct option is A) O→ orange, o→ black</em>
Explanation:
A dominant allele can be described as the allele which masks the effect of a recessive allele. A recessive allele can be described as the allele whose effect gets suppressed by the dominant allele. A dominant allele is written with a capital letter whereas a recessive allele is referred with a small letter.
As the option A shows capital letter, O, for the dominant orange trait and small letter, o , for the recessive black trait hence, it is the correct option.
Pollutants can be stated as the substance which affects the environment and it causes lots of not wanted effects.
<u>Explanation:</u>
<u>Types of pollutants:</u>
1.Air pollution
2. Water pollution
3. Soil pollution
<u>Sources of Air pollution:</u>
- Sources of Air pollution are listed below pollution causing substances from vehicles.
- Then the polluting substances from power plants and industries
- Then emission of wood and stuff
<u>Effects of Air pollution:</u>
- The effects of air pollution include can lead to respiratory problems.
<u>Sources of water pollution:</u>
- The sources of water pollution include radioactive substances, disposal from sewage waste disposal from industries and factories.
<u>Effects of water pollution:</u>
- The effects of water pollution include it kills the living organisms in water bodies and it contaminates the water bodies
<u>Sources of land pollution:</u>
- The source of land pollution comes from the contamination and waste disposal of human wastes, then the mining activities will lead to the contamination of land pollution and nuclear waste
<u>Effects of land pollution:</u>
- The contamination of land pollution causes an increase in Landfill, soil pollution and it will lead to human health disorder and sometimes it will lead to endangered species of animals
Answer:
Monomer is a word made of two parts, mono means one, and met means unit, so monomers are the building units of the polymers. Macromolecules are polymers, macromolecules in biology refers to the major categories of molecules that make the cell which are the proteins, carbohydrates, lipids and nucleic acids.
The mechanism that affected the gene pool of the immigrants that entered the United States through Ellis Island from 1892 to 1954 is B. gene flow. Gene flow is the transfer of genes or alleles from one population to another. The migration of millions of individuals from countries across the Atlantic Ocean to the United States is responsible for the changes in the gene pool of the immigrants.
