The dragon backbone pump was invented during the song dynasty. what does a dragon backbone pump do?
a.
doctors treat bone illnesses
b.
pump water out of flooded boats
c.
allows one man to scoop water from one place and dump it into an irrigation canal
d.
automatically pumps arrows through a long tube

The correct answer is C. Allows one man to scoop water from one place and dump into an irrigation canal

Explanation

The dragon backbone pump was an invention created during the Song dynasty  for irrigation, this object was made of wood and iron and consisted on a rotating gear with moving paddles to scoop water, this helped to the development of agriculture as it allowed people to transfer water, thus with the use of the dragon backbone pump people could wet water from different water sources and transfer it into canals for crops. Due to this, this invention helped people to scoop fresh water and then transfer it to irrigation canals.

the of atp are the key to its ability to store and supply energy;

phosphate

the phosphate groups of atp are the key to its ability to store and supply energy. atp releases energy when it breaks bonds between its phosphate groups.