(2) According to the experiment of exploring "the influence of light on the life of mouse wife", the question is: Does light have an influence on the life of mouse wife? It can be assumed that light will affect the life of the rat girl or light will not affect the life of the rat girl.
(3)① Formulate and implement the inquiry scheme: put a layer of wet soil in the iron plate, with the horizontal axis as the boundary, one side covered with opaque cardboard and the other side covered with transparent glass plate, so as to form a light and dark environment in the plate.
② When studying the influence of a condition on the research object, the experiment with the same conditions except this condition is called control experiment. Put 10 rats in the left center of the iron plate and 10 rats in the right center, and let them stand for 2 minutes.
(3) Because there is a certain contingency and error in an experiment, taking the average of many experiments in each group of the class can reduce the error. Therefore, in order to eliminate the error caused by contingency, the average value of each group is calculated to make the conclusion more accurate.
The prediction results show that there are more rats and women in the dark and fewer rats and women in the light.
Experimental conclusion The experimental conclusion drawn from it is that light has an influence on the life of mice and girls, and mice and girls like to live in a dark environment.
Therefore, the answer is: (1) light;
(2) Light has an influence on the life of the mouse wife.
(3)① light and shade; ② 10③ average; More; Less; Like; Live in a dark environment