Answer:
External respiration: CO2 diffuses into the blood
Explanation:
External respiration is also called the pulmonary gas exchange. It refers to the diffusion of O2 from the air in the alveoli of the lungs to blood in pulmonary capillaries and diffusion of CO2 in the opposite direction from the capillary blood into the alveolar air. External respiration in the lungs is responsible for oxygenation of deoxygenated blood coming from the right side of the heart. The oxygenated blood is then returned to the left side of the heart.
Biodiversity.
Biodiversity is the variety and variability of life on Earth. Biodiversity is typically a measure of variation at the genetic, species, and ecosystem level.
Answer:
Genetic alteration probably refers to altering the DNA sequence present in the genes of chromosomes.
Explanation:
Genetic alternation occurs when the DNA of an organism gets altered due to any circumstance. Even a change in a single nucleotide can have devastating effects on the organism. It can occur due to mutations or physical factors like radiation, UV etc. Genetic alternations can be useful as well as harmful. Genetic alternation is also a source due to which variations might arise in a population and hence, it leads to biodiversity.
<span>A.let myself feel sad and then find ways to move on</span>
