Answer:
<em>Pulmonary surfactant.</em>
Explanation:
It is essential for life as it lines the alveoli to lower surface tension, thereby preventing atelectasis (a complete or partial collapse of the entire lung or area (lobe) of the lung) during breathing.
Answer:
an idiom
Explanation:
not meaning the literal thing you said,
just as those who die do not actually kick a bucket or calendar, it is a phrase to use that means someone has died
hope this helps:)
Answer:
Blocking the rays physically....
Explanation:
There have two ways that sunscreen protect minerals nanoparticles from uv radiations. Those are; blocking the rays physically
Absorbing them chemically.
Minerals powders are in nanoparticles from they come on clear without leaving much of white residue on skin
