Answer:
C) Biomagnification of mercury results in toxic levels of mercury high in the food chains.
Explanation:
To ensure the continuity of the species
increase variation in species for natural selection to occur
Answer:
The correct answer is option A. "directional selection".
Explanation:
Directional selection is a type of natural selection at which traits with extreme characteristics are selected over traits with medium characteristics. In this case, a long-term climatic change resulted in all seeds that are the fountain of food for finch becoming hard. This will result in a directional selection on bill size in the finch population, where large-billed birds will be selected over small and medium-billed birds.
Fermentation and anaerobic respiration
Answer:
B. An increase in gene flow between the bird populations.
Explanation:
