Question: How is the oxygen cycle effected?
- Human activities
- Running of automobiles
- Consumption of fossil fuels Choose the correct code
Options:
A) 1 and 2
B) 2 and 3
C) 1 and 3
D) 1, 2, 3
Show Answer
Answer:
Correct Answer: D
Solution:
- The oxygen concentration in atmosphere is 21%. The oxygen cycle is effected by human activities such as running automobiles and consumption of fossil fuels which release more carbon dioxide in the atmosphere.
BETA
