Consider the students' experimental design. What was the independent variable and what purpose did it serve to answer the research question?
A)
condition of tablet; chewing food
B)
time to dissolve; digestion process
9
time to dissolve; enzyme action time
D
condition of tablet; chemical digestion

The table presents the average day and night temperatures in five cities. it also reveals whether a city receives substantial rainfall (wet climate) or little rainfall (dry climate). which city’s rocks are likeliest to experience frost wedging, and why? a) city a because the consistently subzero temperature would prevent water from melting b) city b because it is a wet region and the temperature fluctuates around the freezing point c) city c because it receives plenty of rain fall and the weather is moderately cool d) city d because the hot and dry weather would cause rocks to absorb water