What is the approximate amount of $CO_2$ eliminated by our lungs per day?

What is the last step involved in respiration?

For completion of the respiration process,write the given steps in sequential manner.
$(a)$ Diffusion of gases ($O_2$ and $CO_2$) across alveolar membrane.
$(b)$ Transport of gases by blood.
$(c)$ Utilisation of $O_2$ by the cells for catabolic reactions and resultant release of $CO_2$.
$(d)$ Pulmonary ventilation by which atmospheric air is drawn in and $CO_2$ rich alveolar air is released out.
$(e)$ Diffusion of $O_2$ and $CO_2$ between blood and tissues.

Body compensates for low oxygen availability at high altitudes by:
$I.$ Increasing $RBC$ production
$II.$ Decreasing the binding affinity of haemoglobin
$III.$ Increasing the binding affinity of haemoglobin
$IV.$ Increasing the breathing rate
$V.$ Decreasing the breathing rate
Choose the correct option for the given statement.

Which of the following statements are not correct?
$I.$ Diffusion membrane is made up of $3$ layers
$II.$ Solubility of $CO_{2}$ in blood is higher than $O_{2}$ by $25$ times
$III.$ Breathing volumes are estimated by spirometer
$IV.$ High $H^{+}$ in blood favours oxygen dissociation
Choose the correct option

Which of the following plants possesses sunken stomata?