Question

state true or false
i)Haemoglobin content decreases at high altitude.

(ii) Pharynx is the common passage for air and food.

(iii) During ingestion of food epiglottis remains closed.

(iv) Left lung is bigger than right lung.

(v) During respiration temperature rises.

(vi) Nasal passage is lined by columnar cells.

(vii) In mammal, lactic acid is produced during anaerobic respiration.

(viii) Gaseous exchange takes place in all body cells.

(ix) Expiration is an active process.

(x) Gaseous exchange in the lungs takes place between alveoli and blood capillaries.
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Answer 1

Answer:

if there is a less amount of haemoglobin in our body heat cause many types of disease like lungs Preservation and in mammals electric of acid produced by antibiotics and less amount of increasing hormones