Class7_Science_Respiration in Organisms_Respiration
The cells in our body perform functions like growth, excretion, reproduction, etc. A cell needs
The cells of living organisms require a constant supply of oxygen to release energy. This is done
by a process called breathing. Breathing involves two steps - one inhalation and one exhalation.The breath rate of human beings is 15 -- 18 breaths a minute.
Air passes through the tiny hair in the nasal cavity, and then through the pharynx, larynx and
windpipe before reaching the lungs. The hairs in the nasal cavity prevent the entry of dust particles and pollen. The mucous lining is present from the nasal cavity to the lungs.
The cells of living organisms require a constant supply of oxygen to release energy. This is done
by a process called breathing. Breathing involves two steps - one inhalation and one exhalation.The breath rate of human beings is 15 -- 18 breaths a minute.
Air passes through the tiny hair in the nasal cavity, and then through the pharynx, larynx and
windpipe before reaching the lungs. The hairs in the nasal cavity prevent the entry of dust particles and pollen. The mucous lining is present from the nasal cavity to the lungs.
Today's Devotional
A Prayer for When You Feel Lost - Your Daily Prayer - April 27
When we feel lost, God is our true north. He is the one who can lead us where He wants us. It is so easy to get caught up in listening to the world, so sometimes, it is best to shut it out to create a quiet space for God to work.
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