Answer:
variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce.
Explanation:
Answer:
B. Solution
Explanation:
According to the question statement, Susan wrote in her notebook that it was a blue liquid. Therefore, from a chemistry point of view, it was a solution and not a heterogeneous mixture. Then, the solvent was evaporated after leaving the solution for 72 hours at the windowsill. The solute (blue color most likely) however was not able to evaporate with solvent and left behind.
Example: if you leave the KMnO4+water solution for a few days, water will evaporate thus leaving behind purple crystals of KMnO4.
The correct answer is fermentation.
The production of energy needs oxygen. The electron transport chain, where the most of ATP is produced, needs a huge input of oxygen. However, there are various species, which have produced methods to continue the metabolism in the absence of oxygen, or can move from aerobic to anaerobic cell respiration when oxygen is enough.
At the time of cellular respiration, some of the living species utilize an organic substance as the eventual electron acceptor. The procedures that utilize an organic molecule to reproduce NAD+ from NADH are in a combination known as fermentation.
In comparison, some of the living species utilize an inorganic substance as an ultimate electron acceptor. Both the procedures are known as anaerobic cellular respiration, where the species are obtaining energy for their application in the absence of oxygen.