. The degree of acidity or alkalinity controls the availability of to the plants that inhabit the soil. a. light
b. oxygen
c. water
d. nutrients

Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted

The middle east links which two continents? ●asia and europe●europ and africa●africa and asia●africa and australia

Summarize the president's/vice president's roles and responsibilities in 8 sentences