(2) Match the following Column A (1) Algae (2) Cholera (3) Sharp needle (4) Electron Column B (a) Negatived charged (b) Higher pressure (c) Chlorella (d) Vibrio choleri.
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Answer:
1. Algae - (c) Chlorella
2. Cholera - (d) Vibrio choleri
3. Sharp Needle - (b) Higher Pressure
4. Electron - (a) Negatively Charged
Explanation:
1. Chlorella (c) is a genus of about 13 species of algae (1).
2. Vibrio cholerae (d) is a bacteria which causes cholera (2).
3. A sharp needle (3) causes higher pressure (b) because it has a very narrow tip acting on a very small area but with a higher force.
4. An electron (4) is a negatively-charged (a) particle of an atom.
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