Answer:haemoglobin
Explanation:
Inside the air sacs, oxygen moves across paper-thin walls to tiny blood vessels called capillaries and into your blood. A protein called haemoglobin in the red blood cells then carries the oxygen around your body.
Answer: B
Explanation:
Hydrogen love water (H20) wouldn’t make sense if they burned in water
Coal, oil and natural gas carbon dioxide (CO2)
Answer:
The main role of DNA in the cell is it's a Long term storage of information
Explanation:
The main role is to read the genetic code, cells make a copy of a stretch of DNA in the nucleic acid RNA
Narcotics mimic the brain’s internal system....
