Which of the following is an example of a response to a stimulus. examples are:
A- horse swishing it’s tail at a fly

B- a loud clap of thunder

C- a puddle drying up

D- a seed being planted

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; aerobic conditions; citric acid cycle (krebs cycle) electron transport chain;         anaerobic conditions; fermentation; both glycolysis;