All of the following are examples of how geographical boundaries can limit cultural interaction except rivers
Explanation:
Rivers have historically been the reason of a lot of cultural exchange and not barriers to it due to many reasons.
The primary reason is that there is more chance of civilizations and settlements to happen near a river because of its rich nutrient soil and ready supply of fresh water to drink.
The other is the human ability to cross the water easily making it easy for the people to navigate it and meet people across.
The third reason is that the navigation downstream is how civilizations have historically expanded territory.
The correct answer is Both technicians A and B
Explanation: Waste spark ignition is a compression-sensing system that uses a type ignition.
And because of that the technician A and technician B are right, because they use some type of ignition system that helps to understand this fact.
Answer:
The type of light in the rooms.
Explanation:
In order to find the relation between two variables it has to be observed that one variable changes because of the change in the other variable.
The variable which changes with respect to the other variable is called the dependent variable.
The variable which changes irrespective of the other variable is called the independent variable.
Here, it is being studied what type of light in the room affects the mood of the participants. Hence, the type of light in the rooms whether light or dark is the independent variable while the mood is the dependent variable.
