Question

2. Fill in the blanks -
a. The time gap between two successive sun rises is called
b. All organisms living in the soil are called
C. A part of our body which can respire anaerobically is
d. leads into the lungs.
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Answer 1

Explanation:

1 day

2 archaea, bacteria, actinomycetes, fungi, algae, protozoa

3Answer. the first few yards his muscles respire aerobically, but soon they use up all their available oxygen. Despite his increased breathing rate and heartbeat, oxygen cannot be transported to his muscles fast enough to meet their requirements.

4 The TRACHEA (windpipe) is the passage leading from your pharynx to the lungs. The RIBS are bones supporting and protecting your chest cavity. They move a small amount and help the lungs to expand and contract. The trachea divides into the two main BRONCHI (tubes), one for each lung.