Volumes.
If you put equivalent volumes in a bag, where both weigh the same, the density might get equal.
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Hydrogen, oxygen, and nitrogen atoms.
F= aorta
d=Left atrium]
c= inter-ventricular septum
Respiration using oxygen to break down food molecules is called aerobic respiration. 'Aero' means air, which contains oxygen, leading to the name aerobic respiration. Glucose is the molecule normally used for respiration - it is the main respiratory substrate. Glucose is oxidised to release its energy, which is then stored in ATP molecules.
The word equation for aerobic respiration is:
glucose + oxygen → carbon dioxide + water (+ ATP made)
You need to be able to recognise the chemical formulas:
C6H12O6 + 6O2 → 6CO2 + 6H2O
Specific gravity<span>reflects the amount of wastes, minerals, and solids present in the urine</span>