you've made the hypothesis that the less rainfall a cactus plant gets, the taller it will grow, since cactuses like dry conditio
ns. what is one thing that u should control in an experiment designed to test this hypothesis? A) The height of the cactus plant B) The hours of sunlight the cactus plants gets C) The number of cactus plants in the experiment D) The amount of rain falling on the cactus plants
Here, the independent variable is the amount of rain that makes the cactus plant grow taller. Control is treated the same as all the rest of the samples, except that it is not exposed to variables that are influenced.
In most experiments, it is important to perform a trial with the independent variable, at a special locale for comparison with the other trials.
The control group consists of all trials where the independent variable is left in its natural state. These trials provide a basis for comparison and ensure that any changes observed in the height of cactus plant are in fact caused by the amount of rain.
A migrant worker often earn's money in a host country and returns a small amount to their home country. This money then flows into the economy and can greatly benefit the home country over time.
Southerners opposed Clay's American Systems because the south already had rivers to transport goods and they did not want to pay for roads and canals that brought them no benefit. Since Southerners had to pay tariff, they wanted to make sure that when the tariff was used, they profit from it as well.
