Answer:
If no oxygen is available, yeast will switch over to a process called anaerobic respiration - in this process, glucose (sugar) is fermented to produce energy, carbon dioxide, and ethanol. ... The thing about respiration is that the yeast cells only do it for the sake of producing energy
Covalent Bonds hold together atoms within a molecule
The ecosystem is an ecological system consisting of all of its biotic and abiotic factors
