The answer would be: <span>secrete surfactant
</span>
Type II alveolar cells will secrete surfactant that will reduce the surface tension of the alveoli. A high surface tension will cause the lungs hard to inflate when doing inspiration. Respiratory distress in premature baby mostly caused by surfactant deficiency as their lungs can't produce it.
There is 23 countries in north america
Yes that answer does look right
<h2>Natural selection</h2>
Explanation:
Natural selection acted up on gene,prevents the gene from acting as a reliable molecular clock
- Molecular clock measures the number of changes,or mutations,which accumulate in the gene sequences of different species over time;proves to be a valuable tool for estimating evolutionary timescales
- Natural selection is simply a concept of evolution where organisms with favorable traits are more likely to reproduce
- When natural selection is acted up on a gene governing the molecular clock then that gene won't be reliable because natural selection favors only the dominant gene
- The one's which are dominant and have desirable characteristics are favored under natural selection rest all species are eliminated whereas molecular clocks takes into the consideration the gene sequences of different species and the mutations occurring(irrespective of dominant or recessive species)
- Therefore natural selection will prevent the gene to work as reliable molecular clock whereas neutral mutation forms a base for molecular clocks
All organisms are made up of cells, have different levels of organization, use energy, respond to and adapt to their environments, grow and reproduce. If something does not exhibit each of these characteristics, it is technically not living.
