I believe the answer is: double-blind experiment
In double blind experiments, the subjects that receive the treatment is remained unknown by both the researchers and the subjects until the experiment is finished. The main purpose of double-blind experiment it eliminate the bias of perception that might exist among researchers.
Answer: The US built two and had planned to use both
they us military brought two atomic bombs to Japan and they felt that one was not good enough
Answer:
I think it's the last reason not 100% sure but pretty sure
“el lenguaje es algo innato del ser humano, y no algo aprendido, como defendía el conductismo. Es decir, el lenguaje se adquiere porque los seres humanos estamos biológicamente programados para ello, sin importar el grado de dificultad de la lengua”.
Potatoes are usually grown from other potatoes. You plant a whole small potato or a piece of a larger one for a new plant. The whole potato or cut peace has several slightly recessed dormant buds or "eyes" on the surface. When conditions are right these buds will Sprout rather the potatoes are in ground or on a kitchen cupboard. The Sprouts then develop into independent plants.