Answer:
The correct answer will be option-D
Explanation:
Pulmonary Surfactant is a complex substance produced by the pneumocytes epithelial II cells in the alveolar sac.
The surfactant is composed of the proteins and lipids which plays a role in keeping alveoli open by reducing the surface tension formed between the air and liquid.
The surfactant act by forming a monolayer surface film which helps reduce the surface tension.
Thus, option-D is the correct answer.
Some humans are using more than their fair share of water and it is having a huge impact on the environment. People tend to let their water run while brushing their teeth or shaving, and those are just two of the major problems. There may also be leakages, which can waste gallons among gallons of water. Wasting water hurts humans, it leaves them with less accessible, usable water. Additionally, wasting too much water can hurt the local environment as it drains too much water away from the natural ecosystem.
Explanation: The light-dependent reactions utilize light energy to produce two molecules required for the following stage of photosynthesis: the energy warehouse molecule ATP and the decreased electron transport NADPH. In plants, the light reactions occur in the thylakoid membranes of organelles termed chloroplasts.Oct 26, 2016 thats a explanation for u hope it heled [; dand my hand hurts ];
