Answer:
Glucose - from the food we eat, then the food is broken down into another type of sugar called glucose.
Amino Acid - animal proteins such as meat, eggs and poultry. When you eat protein, it is broken down into amino acids.
Oxygen - we get oxygen by breathing in fresh air.
Answer:
glucose - food
amino acid - animal proteins (meat, eggs, poultry)
oxygen- hemoglobin
