A
CO₂ is the waste product of respiration of cells. Oxygen, on the other hand, is required in cellular respiration. Therefore at the alveolar in the lungs of an organism, CO₂ will be expelled while O₂ will be taken in.
Explanation:
This occurs passively due to the diffusion gradient, CO₂ usually has a higher concentration in the blood and lower concentration in alveoli hence this gas diffuses from the bloodstream into the lungs. On the other hand, oxygen is higher in concentration in the alveoli than in the blood capillaries hence difuses into the blood and taken to the cell for respiration. The CO₂ in the lungs is then expelled through exhalation of the lungs.
Learn More:
For more on gaseous exchange in the lungs check out;
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The building blocks of nucleic acids is nucleotides
Answer:
Genotype
Explanation:
Genotype refers to the genetic constitution of an individual. It represents all the allele combinations of a particular gene or alleles of various genes present in the genome of the organisms and constitutes the genetic makeup of an individual. For instance, if an individual has I^A and I^B allele for ABO blood type, the genotype of the individual for the ABO blood type gene is "I^A I^B". Likewise, "TT" and "tt" represent the genotype of a pea plant having both the same type of alleles for the stem height gene.
Answer:
Evolution
Explanation:
Evolution is the change in the inherited traits of a population from generation to generation. Mutations in these genes can produce new or altered traits, resulting in heritable differences (genetic variation) between organisms.
B the 2nd answer, <span>A large region of interconnected ecosystems.</span>
