Question

D. Mention 'True' or 'False
1. Breathing or external respiration is a physical process
2. We breathe in and out around 2000 times in a day.
3. Majority of animals and plants show aerobic respiration
4. The accumulation of lactic and in the muscles causes muscle cramps.
5. Roots does not need oxygen to produce energy needed for plant to survive.
6. Breathing out carbon dioxide from the nostrils is known as inhalation.​

Answer 1

Answer:

5 is false and 3 is true...