Experimenter bias can best be controlled using Double-blind control.
Answer:
2x-15+11x=180
Explanation:
Both of the angles make up a straight angle, which is a total of 180 degrees. You basically add up both of the agles which make 180 and you solve from there.
One of the most crucial factor that make North American tribes is much easier to colonize than the cenral America is the spread of diseases that wiped out a lot of north and south American population.
Other factors would be that during that time, The central American tribes have more advanced defensive technology compared to the northern American
Answer:
jumping through a hoop
Explanation:
That is a conditioned response someone can have and cannot be inherited. See I like to think of the thing that animals are born with ears, tails, and feathers, but what animal is born jumping? It is usually actions that are not inherited.