Question

V. Multiple choice questions
1) The breathing rate in humans under normal condition is
a) 16-18 times b) 20-25 times c) 39-32 times d) 18-20 times
2) Exhaled air contains more
a) oxygen b) carbon dioxide c) nitrogen c ) oxygen and nitrogen
3) Tuberculosis is caused by
a) MTB b) TB
c) Dust d) virus​

Answer 1

Answer:

1.its 12 to 16 times not from the above options

2.carbondioxide

3.TB

Answer 2

Answer:

1.a

2.b

3.b

Explanation:

1.according to google

2.when we exhale air outside the air contains mostly CO2 as the O2 is mostly used by our organs

3.tuberculosis is caused due to tb virus