Which of the following is true regarding greenhouse effect?
The primary greenhouse gases in Earth's atmosphere are water vapour, carbon dioxide (CO2), nitrous oxide (N2O), methane (CH4) and ozone (O3).
So, the correct answer is option 'D'.
Question 06 Low concentration of oxygen in the blood and tissues of people living at high altitude is due to.............. (a) low temperature (b) low atmospheric pressure (c) high atmospheric pressure (d) Both low temperature and high atmospheric pressure