Question

Q3. Write T for true and F for false. 5x1=5
a. Oxygen constitutes about 21% of the air.
b. Electrically charged particles are called ions.
C. The Earth is divided into three heat zones.
d. When the temperature increases, the rate of evaporation increases.
e. Oceans count for 71 percent off the Earth's water.
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Answer 1

Answer:

a. false

Explanation:

Oxygen constitutes about 20°/• of the air