Heat
We can obtain it by the Solubility method. These two gases has different volumes. Oxygen has 4 volumes which dissolves in 100 volumes of water and ammonia has 702 volumes which dissolves in 1 volume of water. They are insoluble and soluble in water respectively.
Oxygen, carbon, hydrogen, calcium,
ameoba
1. Heating zinc oxide at approx. 2 000 0C this compound is thermally decomposed in oxygen and zinc. 2. Zinc oxide can be reduced with carbon to obtain zinc and oxygen: ZnO + C = Zn + CO
An amoeba lives in an aqueous environment; some oxygen from the air will normally dissolve into the water (or, oxygen is released by plants living in the water) and oxygen will enter the amoeba by the process of diffusion.
Amoeba can die if they lack oxygen. They need it.
Most amoeba do not have chloroplasts. However, recent studies show that amoeba can obtain choloroplasts from engulfing photosynthetic alga.
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An amoeba
An amoeba
Our body obtain oxygen to our body by breathing.
Amoeba has flexible cell membrane. It enables amoeba to engulf in food by the process called endocytosis.
Crustaceans obtain oxygen through gills.
They get oxygen from their gills.
Who is "they" ?
you obtain oxygen from your lungs you could breath through your nose and through your mouth