What is an organism’s niche?
a. the range of physical and biological conditions in which an organism lives and the way in which it uses those conditions.
b. all the physical and biological factors in the organism’s environment.
c. the range of temperatures that the organism needs to survive.
d. a full description of the place an organism lives.

A. the range of physical and biological conditions in which an organism lives and the way in which it uses those conditions. as niche refers to the role and position a species has in its environment, including all of its interactions with the biotic and abiotic factors of its environment. options b, c and d just refer to the environment of the organism and don't mention the role that the organism has to play in the environment, or how it interacts with it. only option a refers to that. hence option a is the correct answer.

Espionage and sedition acts,
private surveillance. 
spying on neighbors 
carrying out slacker raids.
german foods such as hamburgers and saurkraut had their names changed to "liberty sandwich," and liberty cabbage."
persons suspected of loyalty were forced to kiss the american flag in public.
randolph bourne predicted that the war would empower not reformer but " the least democratic forces in american life"
hope this .