Where does most of the nitrogen in earths atmosphere come from?
a: fires
b: erosion
c: bacteria
d: the breakdown of carbon dioxide

Which hotel do you think is most likely to move ahead in market competition? a. a hotel that provides basic amenitiesb.a hotel that provides luxurious amenitiesc.a hotel that shows understanding of customers' latent needsd.a hotel that gives discounts

What are the headings of a data table

What is the difference between bacterial infections and viral infections?