Answer:
As the variables are not given, let us help with general explanation on manipulated variable.
Explanation:
A manipulated variable is an independent variable. In a scientific experiment, an independent variable can be described as a variable which can change naturally or which is changed by the researcher to check its effect on the dependent variable. The dependent variable is the variable which is under study and being tested.
For example, to check the difference in photosynthesis rate by light, the amount of light will be the independent variable and the rate of photosynthesis will be the dependent variable.
An independent variable is a controlled variable while the dependent is the result of the independent variable.
Ex.
If I increase the height of the ramp (i.v.), then the car will go faster (d.v.) because I raised the ramp.
On a graph the indecent variable would be in the y axis and the dependent on the x axis
Answer:
b. breeds 0f domesticated dogs
Explanation:
I think its b.
The answer is 'sensory adaptation'. This happens when your sensory system senses a constant stimulus. After a short while, your sensory system will respond less, and then won't respond at all. This is to allow adaption to your environment. For example, if you live above a subway system, you will eventually become used to the sound of underground trains and vibration, and eventually you won't notice it at all..