Because of the germs and smog from the polluted air molecules is bad .
A niche is the role an animal plays in its environment. A giraffes niche would be their long necks. With their necks they can reach up higher and eat where no other animals can eat. Giraffes don't have to compete with other animals for their food so they live peacefully with other animals.
Answer:
Ventilation (Pulmonary) AKA Breathing
Explanation:
Pulmonary ventilation is often known as breathing. It is the means through which air moving into the lungs in the course of inspiration (inhalation) and away from the lungs at expiration (exhalation). Air flows as a result of variations in pressure between the atmosphere and the gases within the lungs.
Air, just like gases, moves from a zone of larger pressure to a zone of smaller pressure. Muscular breathing activities and recoil of elastic tissues forms the variations in pressure that causes ventilation. Pulmonary ventilation employs three seperate or distinct pressures:
-Atmospheric pressure
-Intraalveolar (intrapulmonary) pressure
-Intrapleural pressure
-Atmospheric pressure is the air pressure that is not from within but from outside of the body.
-Intraalveolar pressure is the pressure within the lungs alveoli.
-Intrapleural pressure is the pressure present in the pleural cavity.
These three pressures are important for pulmonary ventilation.
One molecule of Glucose produces 38 molecules of ATP through the ETC in presence of enough oxygen.
<h3><u>Explanation:</u></h3>
To know the number of ATP produced from a molecule of glucose, we need to know the total amount and the type of products produced in the 3 individual steps of an aerobic respiration.
1. <u>Glycolisis</u> - In glycolisis, one molecule of glucose is converted into two molecules of pyruvate with production of 2 ATP molecules and 2 molecules of NADH.
2. <u>Pyruvate Dehydroogenase step</u> - Two molecules of pyruvate produce a total of 2 NADH.
2. <u>Kreb's Cycle</u> - In Kreb's Cycle, two molecules of Acetyl CoA produce a total of 6 NADH, 2FADH and 2 GTP which is again equivalent to 2 ATP.
In the ETC, each NADH is converted into 3 molecules of ATP and each FADH is converted into 2 molecules of ATP.
In the whole process till now, total of 10 molecules of NADH, 2 molecules of FADH and 4 ATPs.
So total number of ATP produced is 10*3 + 2*2 + 4 = 30+4+4 =38.
