according to an ongoing temperature analysis is conducted by nasa goddard institute for space studies the average global temperature on earth has increased by 1.3 degrees celsius since 1880. What is the average change in temperature per year since 1880

the answer is c a tornado

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.

answer; ///the above statement is (true);