Which changing external condition triggers thirst?
a. lack of oxygen
b. lack of water.
c. disease-causing agents
d. change in temperature

They are both used to view parts of the cell

The correct answer is "b"

This  focuses on  the entrepreneurial leadership of these  growth  firms.   governmentministers can play a critical  role  in  fostering  enterprise and innovation. their  role  is to direct thegovernment  departments and agencies to  focus  on the problem and develop effective policies.