Answer:
They Dissolved / became a compound
Explanation:
Stage 3 because the person fev1 level is go down not up
Answer:
<em>Ultraviolet is a form of electromagnetic radiation with wavelength from 10 nm to 400 nm, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun. </em>
Continuous cell lines can be maintained through an indefinite number of generation :)
Answer:
D, over the past Billions of years, our atmosphere has formed to protect life.
