Gas exchange in humans is the delivery of oxygen lungs to the bloodstream, and the elimination of carbon dioxide from the bloodstream to the lungs.
B) Detectives used DNA markers to match the pods from the truck to pods on the scene.
Answer:
lipids proteins and nucleic acids
Enzymes; lipids, proteins, carbs, and nucleic acids. Mainly proteins.
It means that a food has all the essential amino acids a human body needs
Like:
meat
poultry
fish
eggs
milk
and cheese
