3. Which two of the following are the waste products of anaerobic
respiration in yeast?
A sugar
B carbon dioxide
C water
D ethanol

The chemical reaction of anaerobic respiration for yeast(Saccharomyces) is

C6H1206>2C2H6O+2CO2(ethanol and carbon dioxide)

the correct answers are B and D

b brown mice / white sand dunes

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]