How is nitrogen returned to the atmosphere during the nitrogen cycle?

a.
it is returned to the atmosphere in a process called nitrogen fixation.
b.
it is returned to the atmosphere through denitrification.
c.
it is returned to the atmosphere through cellular respiration.
d.
it is returned to the atmosphere through evapotranspiration.

Which strategy is an example of how companies may upgrade themselves to meet changing customer preferences? a. doing door-to-door sellingb. using billboards to advertise the productsc. making online shopping services availabled. giving discounts on products

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food

Achild is suffering from fever but the doctor cannot immediately pinpoint the alignment on the basis of this one symptom explain why also mention other two such general symptoms